✏️ Leetcode Solutions with Cpp

Update time: 2020-11-27 17:29:35
Solution by Derek Zheng (Contact ME at derek.zhengrui@gmail.com)
Auto created by leetcode_generate
I have solved 564 / 1516 problems~

#	Title	Source Code	Article	Difficulty
1	two-sum	Cpp	📝	Easy
2	add-two-numbers	Cpp	📝	Medium
3	longest-substring-without-repeating-characters	Cpp	📝	Medium
4	median-of-two-sorted-arrays	Cpp	📝	Hard
5	longest-palindromic-substring	Cpp	📝	Medium
6	zigzag-conversion	Cpp	📝	Medium
7	reverse-integer	Cpp	📝	Easy
8	string-to-integer-atoi	Cpp	📝	Medium
9	palindrome-number	Cpp	📝	Easy
10	regular-expression-matching	Cpp	📝	Hard
11	container-with-most-water	Cpp	📝	Medium
12	integer-to-roman	Cpp	📝	Medium
13	roman-to-integer	Cpp	📝	Easy
14	longest-common-prefix	Cpp	📝	Easy
15	3sum	Cpp	📝	Medium
16	3sum-closest	Cpp	📝	Medium
17	letter-combinations-of-a-phone-number	Cpp	📝	Medium
18	4sum	Cpp	📝	Medium
19	remove-nth-node-from-end-of-list	Cpp	📝	Medium
20	valid-parentheses	Cpp	📝	Easy
21	merge-two-sorted-lists	Cpp	📝	Easy
22	generate-parentheses	Cpp	📝	Medium
23	merge-k-sorted-lists	Cpp	📝	Hard
24	swap-nodes-in-pairs	Cpp	📝	Medium
25	reverse-nodes-in-k-group	Cpp	📝	Hard
26	remove-duplicates-from-sorted-array	Cpp	📝	Easy
27	remove-element	Cpp	📝	Easy
28	implement-strstr	Cpp	📝	Easy
29	divide-two-integers	Cpp	📝	Medium
30	substring-with-concatenation-of-all-words	Cpp		Hard
31	next-permutation	Cpp	📝	Medium
32	longest-valid-parentheses	Cpp	📝	Hard
33	search-in-rotated-sorted-array	Cpp	📝	Medium
34	find-first-and-last-position-of-element-in-sorted-array	Cpp	📝	Medium
35	search-insert-position	Cpp	📝	Easy
36	valid-sudoku	Cpp	📝	Medium
37	sudoku-solver	Cpp	📝	Hard
38	count-and-say	Cpp	📝	Easy
39	combination-sum	Cpp	📝	Medium
40	combination-sum-ii	Cpp		Medium
41	first-missing-positive	Cpp	📝	Hard
42	trapping-rain-water	Cpp	📝	Hard
43	multiply-strings	Cpp		Medium
44	wildcard-matching	Cpp	📝	Hard
45	jump-game-ii	Cpp	📝	Hard
46	permutations	Cpp	📝	Medium
47	permutations-ii	Cpp	📝	Medium
48	rotate-image	Cpp	📝	Medium
49	group-anagrams	Cpp	📝	Medium
50	powx-n	Cpp	📝	Medium
51	n-queens	Cpp	📝	Hard
52	n-queens-ii	Cpp	📝	Hard
53	maximum-subarray	Cpp	📝	Easy
54	spiral-matrix	Cpp	📝	Medium
55	jump-game	Cpp	📝	Medium
56	merge-intervals	Cpp	📝	Medium
57	insert-interval	Cpp	📝	Medium
58	length-of-last-word	Cpp	📝	Easy
59	spiral-matrix-ii	Cpp	📝	Medium
60	permutation-sequence	Cpp	📝	Hard
61	rotate-list	Cpp	📝	Medium
62	unique-paths	Cpp	📝	Medium
63	unique-paths-ii	Cpp	📝	Medium
64	minimum-path-sum	Cpp	📝	Medium
65	valid-number	Cpp		Hard
66	plus-one	Cpp	📝	Easy
67	add-binary	Cpp	📝	Easy
68	text-justification	Cpp		Hard
69	sqrtx	Cpp	📝	Easy
70	climbing-stairs	Cpp	📝	Easy
71	simplify-path	Cpp	📝	Medium
72	edit-distance	Cpp	📝	Hard
73	set-matrix-zeroes	Cpp	📝	Medium
74	search-a-2d-matrix	Cpp	📝	Medium
75	sort-colors	Cpp	📝	Medium
76	minimum-window-substring	Cpp	📝	Hard
77	combinations	Cpp	📝	Medium
78	subsets	Cpp	📝	Medium
79	word-search	Cpp	📝	Medium
80	remove-duplicates-from-sorted-array-ii	Cpp	📝	Medium
81	search-in-rotated-sorted-array-ii	Cpp	📝	Medium
82	remove-duplicates-from-sorted-list-ii	Cpp		Medium
83	remove-duplicates-from-sorted-list	Cpp	📝	Easy
84	largest-rectangle-in-histogram	Cpp	📝	Hard
85	maximal-rectangle	Cpp	📝	Hard
86	partition-list	Cpp	📝	Medium
87	scramble-string	Cpp		Hard
88	merge-sorted-array	Cpp	📝	Easy
89	gray-code	Cpp		Medium
90	subsets-ii	Cpp		Medium
91	decode-ways	Cpp	📝	Medium
92	reverse-linked-list-ii	Cpp	📝	Medium
93	restore-ip-addresses	Cpp	📝	Medium
94	binary-tree-inorder-traversal	Cpp	📝	Medium
95	unique-binary-search-trees-ii	Cpp	📝	Medium
96	unique-binary-search-trees	Cpp	📝	Medium
97	interleaving-string	Cpp	📝	Hard
98	validate-binary-search-tree	Cpp	📝	Medium
99	recover-binary-search-tree	Cpp	📝	Hard
100	same-tree	Cpp	📝	Easy
101	symmetric-tree	Cpp	📝	Easy
102	binary-tree-level-order-traversal	Cpp	📝	Medium
103	binary-tree-zigzag-level-order-traversal	Cpp	📝	Medium
104	maximum-depth-of-binary-tree	Cpp	📝	Easy
105	construct-binary-tree-from-preorder-and-inorder-traversal	Cpp	📝	Medium
106	construct-binary-tree-from-inorder-and-postorder-traversal	Cpp	📝	Medium
107	binary-tree-level-order-traversal-ii	Cpp	📝	Easy
108	convert-sorted-array-to-binary-search-tree	Cpp	📝	Easy
109	convert-sorted-list-to-binary-search-tree	Cpp	📝	Medium
110	balanced-binary-tree	Cpp	📝	Easy
111	minimum-depth-of-binary-tree	Cpp	📝	Easy
112	path-sum	Cpp	📝	Easy
113	path-sum-ii	Cpp	📝	Medium
114	flatten-binary-tree-to-linked-list	Cpp	📝	Medium
115	distinct-subsequences	Cpp	📝	Hard
116	populating-next-right-pointers-in-each-node	Cpp	📝	Medium
117	populating-next-right-pointers-in-each-node-ii	Cpp	📝	Medium
118	pascals-triangle	Cpp	📝	Easy
119	pascals-triangle-ii	Cpp	📝	Easy
120	triangle	Cpp		Medium
121	best-time-to-buy-and-sell-stock	Cpp	📝	Easy
122	best-time-to-buy-and-sell-stock-ii	Cpp	📝	Easy
123	best-time-to-buy-and-sell-stock-iii	Cpp	📝	Hard
124	binary-tree-maximum-path-sum	Cpp	📝	Hard
125	valid-palindrome	Cpp	📝	Easy
126	word-ladder-ii	Cpp		Hard
127	word-ladder	Cpp	📝	Medium
128	longest-consecutive-sequence	Cpp	📝	Hard
129	sum-root-to-leaf-numbers	Cpp	📝	Medium
130	surrounded-regions	Cpp	📝	Medium
131	palindrome-partitioning	Cpp	📝	Medium
132	palindrome-partitioning-ii	Cpp		Hard
133	clone-graph	Cpp	📝	Medium
134	gas-station	Cpp	📝	Medium
135	candy	Cpp	📝	Hard
136	single-number	Cpp	📝	Easy
137	single-number-ii	Cpp	📝	Medium
138	copy-list-with-random-pointer	Cpp	📝	Medium
139	word-break	Cpp	📝	Medium
140	word-break-ii	Cpp	📝	Hard
141	linked-list-cycle	Cpp	📝	Easy
142	linked-list-cycle-ii	Cpp	📝	Medium
143	reorder-list	Cpp	📝	Medium
144	binary-tree-preorder-traversal	Cpp	📝	Medium
145	binary-tree-postorder-traversal	Cpp	📝	Medium
146	lru-cache	Cpp	📝	Medium
147	insertion-sort-list	Cpp	📝	Medium
148	sort-list	Cpp	📝	Medium
149	max-points-on-a-line	Cpp	📝	Hard
150	evaluate-reverse-polish-notation	Cpp	📝	Medium
151	reverse-words-in-a-string	Cpp	📝	Medium
152	maximum-product-subarray	Cpp	📝	Medium
153	find-minimum-in-rotated-sorted-array	Cpp	📝	Medium
154	find-minimum-in-rotated-sorted-array-ii	Cpp	📝	Hard
155	min-stack	Cpp	📝	Easy
156	binary-tree-upside-down	🔒		Medium
157	read-n-characters-given-read4	🔒	📝	Easy
158	read-n-characters-given-read4-ii-call-multiple-times	🔒		Hard
159	longest-substring-with-at-most-two-distinct-characters	🔒	📝	Medium
160	intersection-of-two-linked-lists	Cpp	📝	Easy
161	one-edit-distance	🔒	📝	Medium
162	find-peak-element	Cpp	📝	Medium
163	missing-ranges	🔒	📝	Easy
164	maximum-gap	Cpp	📝	Hard
165	compare-version-numbers	Cpp	📝	Medium
166	fraction-to-recurring-decimal	Cpp	📝	Medium
167	two-sum-ii-input-array-is-sorted	Cpp	📝	Easy
168	excel-sheet-column-title	Cpp		Easy
169	majority-element	Cpp	📝	Easy
170	two-sum-iii-data-structure-design	🔒	📝	Easy
171	excel-sheet-column-number	Cpp	📝	Easy
172	factorial-trailing-zeroes	Cpp	📝	Easy
173	binary-search-tree-iterator	Cpp	📝	Medium
174	dungeon-game	Cpp	📝	Hard
179	largest-number	Cpp	📝	Medium
186	reverse-words-in-a-string-ii	🔒	📝	Medium
187	repeated-dna-sequences	Cpp	📝	Medium
188	best-time-to-buy-and-sell-stock-iv	Cpp	📝	Hard
189	rotate-array	Cpp	📝	Medium
190	reverse-bits	Cpp	📝	Easy
191	number-of-1-bits	Cpp	📝	Easy
198	house-robber	Cpp	📝	Easy
199	binary-tree-right-side-view	Cpp	📝	Medium
200	number-of-islands	Cpp	📝	Medium
201	bitwise-and-of-numbers-range	Cpp	📝	Medium
202	happy-number	Cpp	📝	Easy
203	remove-linked-list-elements	Cpp	📝	Easy
204	count-primes	Cpp		Easy
205	isomorphic-strings	Cpp		Easy
206	reverse-linked-list	Cpp	📝	Easy
207	course-schedule	Cpp	📝	Medium
208	implement-trie-prefix-tree	Cpp	📝	Medium
209	minimum-size-subarray-sum	Cpp	📝	Medium
210	course-schedule-ii	Cpp	📝	Medium
211	design-add-and-search-words-data-structure	Cpp	📝	Medium
212	word-search-ii	Cpp	📝	Hard
213	house-robber-ii	Cpp	📝	Medium
214	shortest-palindrome	Cpp	📝	Hard
215	kth-largest-element-in-an-array	Cpp	📝	Medium
216	combination-sum-iii	Cpp	📝	Medium
217	contains-duplicate	Cpp	📝	Easy
218	the-skyline-problem	Cpp	📝	Hard
219	contains-duplicate-ii	Cpp	📝	Easy
220	contains-duplicate-iii	Cpp	📝	Medium
221	maximal-square	Cpp	📝	Medium
222	count-complete-tree-nodes	Cpp	📝	Medium
223	rectangle-area	Cpp		Medium
224	basic-calculator	Cpp	📝	Hard
225	implement-stack-using-queues	Cpp	📝	Easy
226	invert-binary-tree	Cpp	📝	Easy
227	basic-calculator-ii	Cpp	📝	Medium
228	summary-ranges	Cpp	📝	Easy
229	majority-element-ii	Cpp	📝	Medium
230	kth-smallest-element-in-a-bst	Cpp	📝	Medium
231	power-of-two	Cpp	📝	Easy
232	implement-queue-using-stacks	Cpp	📝	Easy
233	number-of-digit-one	Cpp	📝	Hard
234	palindrome-linked-list	Cpp	📝	Easy
235	lowest-common-ancestor-of-a-binary-search-tree	Cpp	📝	Easy
236	lowest-common-ancestor-of-a-binary-tree	Cpp	📝	Medium
237	delete-node-in-a-linked-list	Cpp	📝	Easy
238	product-of-array-except-self	Cpp	📝	Medium
239	sliding-window-maximum	Cpp	📝	Hard
240	search-a-2d-matrix-ii	Cpp	📝	Medium
241	different-ways-to-add-parentheses	Cpp		Medium
242	valid-anagram	Cpp	📝	Easy
243	shortest-word-distance	🔒	📝	Easy
244	shortest-word-distance-ii	🔒	📝	Medium
245	shortest-word-distance-iii	🔒		Medium
246	strobogrammatic-number	🔒		Easy
247	strobogrammatic-number-ii	🔒		Medium
248	strobogrammatic-number-iii	🔒		Hard
249	group-shifted-strings	🔒		Medium
250	count-univalue-subtrees	🔒	📝	Medium
251	flatten-2d-vector	🔒	📝	Medium
252	meeting-rooms	🔒	📝	Easy
253	meeting-rooms-ii	🔒	📝	Medium
254	factor-combinations	🔒		Medium
255	verify-preorder-sequence-in-binary-search-tree	🔒		Medium
256	paint-house	🔒	📝	Medium
257	binary-tree-paths	Cpp	📝	Easy
258	add-digits	Cpp	📝	Easy
259	3sum-smaller	🔒	📝	Medium
260	single-number-iii	Cpp	📝	Medium
261	graph-valid-tree	🔒	📝	Medium
263	ugly-number	Cpp		Easy
264	ugly-number-ii	Cpp	📝	Medium
265	paint-house-ii	🔒	📝	Hard
266	palindrome-permutation	🔒	📝	Easy
267	palindrome-permutation-ii	🔒	📝	Medium
268	missing-number	Cpp	📝	Easy
269	alien-dictionary	🔒	📝	Hard
270	closest-binary-search-tree-value	🔒	📝	Easy
271	encode-and-decode-strings	🔒	📝	Medium
272	closest-binary-search-tree-value-ii	🔒	📝	Hard
273	integer-to-english-words	Cpp	📝	Hard
274	h-index	Cpp	📝	Medium
275	h-index-ii	Cpp	📝	Medium
276	paint-fence	🔒	📝	Easy
277	find-the-celebrity	🔒	📝	Medium
278	first-bad-version	Cpp	📝	Easy
279	perfect-squares	Cpp	📝	Medium
280	wiggle-sort	🔒	📝	Medium
281	zigzag-iterator	🔒	📝	Medium
282	expression-add-operators	Cpp	📝	Hard
283	move-zeroes	Cpp	📝	Easy
284	peeking-iterator	Cpp	📝	Medium
285	inorder-successor-in-bst	🔒	📝	Medium
286	walls-and-gates	🔒	📝	Medium
287	find-the-duplicate-number	Cpp	📝	Medium
288	unique-word-abbreviation	🔒	📝	Medium
289	game-of-life	Cpp	📝	Medium
290	word-pattern	Cpp	📝	Easy
291	word-pattern-ii	🔒		Hard
292	nim-game	Cpp	📝	Easy
293	flip-game	🔒		Easy
294	flip-game-ii	🔒		Medium
295	find-median-from-data-stream	Cpp	📝	Hard
296	best-meeting-point	🔒	📝	Hard
297	serialize-and-deserialize-binary-tree	Cpp	📝	Hard
298	binary-tree-longest-consecutive-sequence	🔒	📝	Medium
299	bulls-and-cows	Cpp	📝	Medium
300	longest-increasing-subsequence	Cpp	📝	Medium
301	remove-invalid-parentheses	Cpp	📝	Hard
302	smallest-rectangle-enclosing-black-pixels	🔒	📝	Hard
303	range-sum-query-immutable	Cpp	📝	Easy
304	range-sum-query-2d-immutable	Cpp	📝	Medium
305	number-of-islands-ii	🔒	📝	Hard
306	additive-number	Cpp		Medium
307	range-sum-query-mutable	Cpp	📝	Medium
308	range-sum-query-2d-mutable	🔒		Hard
309	best-time-to-buy-and-sell-stock-with-cooldown	Cpp	📝	Medium
310	minimum-height-trees	Cpp	📝	Medium
311	sparse-matrix-multiplication	🔒		Medium
312	burst-balloons	Cpp	📝	Hard
313	super-ugly-number	Cpp		Medium
314	binary-tree-vertical-order-traversal	🔒	📝	Medium
315	count-of-smaller-numbers-after-self	Cpp		Hard
316	remove-duplicate-letters	Cpp	📝	Medium
317	shortest-distance-from-all-buildings	🔒		Hard
318	maximum-product-of-word-lengths	Cpp	📝	Medium
319	bulb-switcher	Cpp		Medium
320	generalized-abbreviation	🔒	📝	Medium
321	create-maximum-number	Cpp		Hard
322	coin-change	Cpp	📝	Medium
323	number-of-connected-components-in-an-undirected-graph	🔒		Medium
324	wiggle-sort-ii	Cpp		Medium
325	maximum-size-subarray-sum-equals-k	🔒		Medium
326	power-of-three	Cpp	📝	Easy
327	count-of-range-sum	Cpp		Hard
328	odd-even-linked-list	Cpp	📝	Medium
329	longest-increasing-path-in-a-matrix	Cpp	📝	Hard
330	patching-array	Cpp	📝	Hard
331	verify-preorder-serialization-of-a-binary-tree	Cpp	📝	Medium
332	reconstruct-itinerary	Cpp	📝	Medium
333	largest-bst-subtree	🔒		Medium
334	increasing-triplet-subsequence	Cpp	📝	Medium
335	self-crossing	Cpp		Hard
336	palindrome-pairs	Cpp	📝	Hard
337	house-robber-iii	Cpp	📝	Medium
338	counting-bits	Cpp	📝	Medium
339	nested-list-weight-sum	🔒	📝	Easy
340	longest-substring-with-at-most-k-distinct-characters	🔒	📝	Hard
341	flatten-nested-list-iterator	Cpp	📝	Medium
342	power-of-four	Cpp	📝	Easy
343	integer-break	Cpp		Medium
344	reverse-string	Cpp	📝	Easy
345	reverse-vowels-of-a-string	Cpp		Easy
346	moving-average-from-data-stream	🔒	📝	Easy
347	top-k-frequent-elements	Cpp	📝	Medium
348	design-tic-tac-toe	🔒		Medium
349	intersection-of-two-arrays	Cpp	📝	Easy
350	intersection-of-two-arrays-ii	Cpp	📝	Easy
351	android-unlock-patterns	🔒	📝	Medium
352	data-stream-as-disjoint-intervals	Cpp		Hard
353	design-snake-game	🔒	📝	Medium
354	russian-doll-envelopes	Cpp	📝	Hard
355	design-twitter	Cpp		Medium
356	line-reflection	🔒		Medium
357	count-numbers-with-unique-digits	Cpp		Medium
358	rearrange-string-k-distance-apart	🔒		Hard
359	logger-rate-limiter	🔒	📝	Easy
360	sort-transformed-array	🔒		Medium
361	bomb-enemy	🔒	📝	Medium
362	design-hit-counter	🔒		Medium
363	max-sum-of-rectangle-no-larger-than-k	Cpp		Hard
364	nested-list-weight-sum-ii	🔒		Medium
365	water-and-jug-problem	Cpp		Medium
366	find-leaves-of-binary-tree	🔒	📝	Medium
367	valid-perfect-square	Cpp	📝	Easy
368	largest-divisible-subset	Cpp	📝	Medium
369	plus-one-linked-list	🔒	📝	Medium
370	range-addition	🔒	📝	Medium
371	sum-of-two-integers	Cpp	📝	Medium
372	super-pow	Cpp		Medium
373	find-k-pairs-with-smallest-sums	Cpp		Medium
374	guess-number-higher-or-lower	Cpp	📝	Easy
375	guess-number-higher-or-lower-ii	Cpp	📝	Medium
376	wiggle-subsequence	Cpp	📝	Medium
377	combination-sum-iv	Cpp		Medium
378	kth-smallest-element-in-a-sorted-matrix	Cpp	📝	Medium
379	design-phone-directory	🔒		Medium
380	insert-delete-getrandom-o1	Cpp	📝	Medium
381	insert-delete-getrandom-o1-duplicates-allowed	Cpp	📝	Hard
382	linked-list-random-node	Cpp	📝	Medium
383	ransom-note	Cpp	📝	Easy
384	shuffle-an-array	Cpp	📝	Medium
385	mini-parser	Cpp		Medium
386	lexicographical-numbers	Cpp		Medium
387	first-unique-character-in-a-string	Cpp	📝	Easy
388	longest-absolute-file-path	Cpp		Medium
389	find-the-difference	Cpp	📝	Easy
390	elimination-game	Cpp		Medium
391	perfect-rectangle	Cpp		Hard
392	is-subsequence	Cpp	📝	Easy
393	utf-8-validation	Cpp	📝	Medium
394	decode-string	Cpp	📝	Medium
395	longest-substring-with-at-least-k-repeating-characters	Cpp	📝	Medium
396	rotate-function	Cpp		Medium
397	integer-replacement	Cpp		Medium
398	random-pick-index	Cpp	📝	Medium
399	evaluate-division	Cpp	📝	Medium
400	nth-digit	Cpp		Medium
401	binary-watch	Cpp		Easy
402	remove-k-digits	Cpp	📝	Medium
403	frog-jump	Cpp	📝	Hard
404	sum-of-left-leaves	Cpp	📝	Easy
405	convert-a-number-to-hexadecimal	Cpp		Easy
406	queue-reconstruction-by-height	Cpp	📝	Medium
407	trapping-rain-water-ii	Cpp		Hard
408	valid-word-abbreviation	🔒		Easy
409	longest-palindrome	Cpp	📝	Easy
410	split-array-largest-sum	Cpp	📝	Hard
411	minimum-unique-word-abbreviation	🔒		Hard
412	fizz-buzz	Cpp	📝	Easy
413	arithmetic-slices	Cpp	📝	Medium
414	third-maximum-number	Cpp	📝	Easy
415	add-strings	Cpp	📝	Easy
416	partition-equal-subset-sum	Cpp	📝	Medium
417	pacific-atlantic-water-flow	Cpp		Medium
418	sentence-screen-fitting	🔒		Medium
419	battleships-in-a-board	Cpp		Medium
420	strong-password-checker	Cpp		Hard
421	maximum-xor-of-two-numbers-in-an-array	Cpp	📝	Medium
422	valid-word-square	🔒		Easy
423	reconstruct-original-digits-from-english	Cpp	📝	Medium
424	longest-repeating-character-replacement	Cpp		Medium
425	word-squares	🔒	📝	Hard
432	all-oone-data-structure	Cpp		Hard
433	minimum-genetic-mutation	Cpp		Medium
434	number-of-segments-in-a-string	Cpp	📝	Easy
435	non-overlapping-intervals	Cpp	📝	Medium
436	find-right-interval	Cpp	📝	Medium
437	path-sum-iii	Cpp	📝	Medium
438	find-all-anagrams-in-a-string	Cpp	📝	Medium
439	ternary-expression-parser	🔒		Medium
440	k-th-smallest-in-lexicographical-order	Cpp		Hard
441	arranging-coins	Cpp	📝	Easy
442	find-all-duplicates-in-an-array	Cpp	📝	Medium
443	string-compression	Cpp	📝	Medium
444	sequence-reconstruction	🔒		Medium
445	add-two-numbers-ii	Cpp	📝	Medium
446	arithmetic-slices-ii-subsequence	Cpp	📝	Hard
447	number-of-boomerangs	Cpp		Medium
448	find-all-numbers-disappeared-in-an-array	Cpp	📝	Easy
449	serialize-and-deserialize-bst	Cpp	📝	Medium
450	delete-node-in-a-bst	Cpp	📝	Medium
451	sort-characters-by-frequency	Cpp	📝	Medium
452	minimum-number-of-arrows-to-burst-balloons	Cpp	📝	Medium
453	minimum-moves-to-equal-array-elements	Cpp	📝	Easy
454	4sum-ii	Cpp	📝	Medium
455	assign-cookies	Cpp		Easy
456	132-pattern	Cpp	📝	Medium
457	circular-array-loop	Cpp		Medium
458	poor-pigs	Cpp	📝	Hard
459	repeated-substring-pattern	Cpp	📝	Easy
460	lfu-cache	Cpp		Hard
461	hamming-distance	Cpp	📝	Easy
462	minimum-moves-to-equal-array-elements-ii	Cpp	📝	Medium
463	island-perimeter	Cpp	📝	Easy
464	can-i-win	Cpp		Medium
465	optimal-account-balancing	🔒		Hard
466	count-the-repetitions	Cpp	📝	Hard
467	unique-substrings-in-wraparound-string	Cpp		Medium
468	validate-ip-address	Cpp	📝	Medium
469	convex-polygon	🔒		Medium
471	encode-string-with-shortest-length	🔒		Hard
472	concatenated-words	Cpp		Hard
473	matchsticks-to-square	Cpp	📝	Medium
474	ones-and-zeroes	Cpp	📝	Medium
475	heaters	Cpp		Medium
476	number-complement	Cpp	📝	Easy
477	total-hamming-distance	Cpp	📝	Medium
479	largest-palindrome-product	Cpp		Hard
480	sliding-window-median	Cpp	📝	Hard
481	magical-string	Cpp		Medium
482	license-key-formatting	Cpp		Easy
483	smallest-good-base	Cpp		Hard
484	find-permutation	🔒	📝	Medium
485	max-consecutive-ones	Cpp	📝	Easy
486	predict-the-winner	Cpp	📝	Medium
487	max-consecutive-ones-ii	🔒		Medium
488	zuma-game	Cpp		Hard
1643	kth-smallest-instructions			Hard
490	the-maze	🔒	📝	Medium
491	increasing-subsequences	Cpp		Medium
492	construct-the-rectangle	Cpp		Easy
493	reverse-pairs	Cpp	📝	Hard
494	target-sum	Cpp	📝	Medium
495	teemo-attacking	Cpp	📝	Medium
496	next-greater-element-i	Cpp	📝	Easy
498	diagonal-traverse	Cpp	📝	Medium
499	the-maze-iii	🔒		Hard
500	keyboard-row	Cpp		Easy
501	find-mode-in-binary-search-tree	Cpp		Easy
502	ipo	Cpp	📝	Hard
503	next-greater-element-ii	Cpp	📝	Medium
504	base-7	Cpp		Easy
505	the-maze-ii	🔒	📝	Medium
506	relative-ranks	Cpp		Easy
507	perfect-number	Cpp	📝	Easy
508	most-frequent-subtree-sum	Cpp		Medium
510	inorder-successor-in-bst-ii	🔒	📝	Medium
1059	all-paths-from-source-lead-to-destination	🔒		Medium
513	find-bottom-left-tree-value	Cpp		Medium
514	freedom-trail	Cpp		Hard
515	find-largest-value-in-each-tree-row	Cpp		Medium
516	longest-palindromic-subsequence	Cpp		Medium
517	super-washing-machines	Cpp	📝	Hard
518	coin-change-2	Cpp	📝	Medium
520	detect-capital	Cpp	📝	Easy
521	longest-uncommon-subsequence-i	Cpp	📝	Easy
522	longest-uncommon-subsequence-ii		📝	Medium
523	continuous-subarray-sum	Cpp	📝	Medium
524	longest-word-in-dictionary-through-deleting	Cpp	📝	Medium
525	contiguous-array	Cpp	📝	Medium
526	beautiful-arrangement	Cpp	📝	Medium
527	word-abbreviation	🔒	📝	Hard
529	minesweeper	Cpp		Medium
530	minimum-absolute-difference-in-bst			Easy
531	lonely-pixel-i	🔒		Medium
532	k-diff-pairs-in-an-array		📝	Medium
533	lonely-pixel-ii	🔒		Medium
535	encode-and-decode-tinyurl	Cpp	📝	Medium
536	construct-binary-tree-from-string	🔒		Medium
537	complex-number-multiplication	Cpp	📝	Medium
538	convert-bst-to-greater-tree	Cpp	📝	Medium
539	minimum-time-difference			Medium
540	single-element-in-a-sorted-array	Cpp	📝	Medium
541	reverse-string-ii		📝	Easy
542	01-matrix	Cpp	📝	Medium
543	diameter-of-binary-tree	Cpp	📝	Easy
544	output-contest-matches	🔒	📝	Medium
545	boundary-of-binary-tree	🔒	📝	Medium
546	remove-boxes	Cpp	📝	Hard
547	friend-circles	Cpp	📝	Medium
548	split-array-with-equal-sum	🔒	📝	Medium
549	binary-tree-longest-consecutive-sequence-ii	🔒	📝	Medium
551	student-attendance-record-i		📝	Easy
552	student-attendance-record-ii		📝	Hard
553	optimal-division	Cpp	📝	Medium
554	brick-wall	Cpp	📝	Medium
555	split-concatenated-strings	🔒	📝	Medium
556	next-greater-element-iii		📝	Medium
557	reverse-words-in-a-string-iii	Cpp	📝	Easy
560	subarray-sum-equals-k	Cpp	📝	Medium
561	array-partition-i	Cpp	📝	Easy
562	longest-line-of-consecutive-one-in-matrix	🔒	📝	Medium
563	binary-tree-tilt		📝	Easy
564	find-the-closest-palindrome		📝	Hard
565	array-nesting		📝	Medium
566	reshape-the-matrix	Cpp	📝	Easy
567	permutation-in-string		📝	Medium
568	maximum-vacation-days	🔒	📝	Hard
572	subtree-of-another-tree		📝	Easy
573	squirrel-simulation	🔒	📝	Medium
575	distribute-candies	Cpp	📝	Easy
576	out-of-boundary-paths	Cpp	📝	Medium
581	shortest-unsorted-continuous-subarray	Cpp	📝	Medium
582	kill-process	🔒	📝	Medium
583	delete-operation-for-two-strings		📝	Medium
587	erect-the-fence		📝	Hard
588	design-in-memory-file-system	🔒	📝	Hard
591	tag-validator		📝	Hard
592	fraction-addition-and-subtraction		📝	Medium
593	valid-square		📝	Medium
594	longest-harmonious-subsequence		📝	Easy
598	range-addition-ii		📝	Easy
599	minimum-index-sum-of-two-lists		📝	Easy
600	non-negative-integers-without-consecutive-ones		📝	Hard
604	design-compressed-string-iterator	🔒	📝	Easy
605	can-place-flowers		📝	Easy
606	construct-string-from-binary-tree		📝	Easy
609	find-duplicate-file-in-system		📝	Medium
611	valid-triangle-number		📝	Medium
616	add-bold-tag-in-string	🔒	📝	Medium
617	merge-two-binary-trees	Cpp	📝	Easy
621	task-scheduler	Cpp	📝	Medium
623	add-one-row-to-tree	Cpp	📝	Medium
624	maximum-distance-in-arrays	🔒	📝	Medium
625	minimum-factorization	🔒	📝	Medium
628	maximum-product-of-three-numbers	Cpp	📝	Easy
629	k-inverse-pairs-array		📝	Hard
630	course-schedule-iii		📝	Hard
631	design-excel-sum-formula	🔒	📝	Hard
632	smallest-range-covering-elements-from-k-lists		📝	Hard
633	sum-of-square-numbers		📝	Medium
634	find-the-derangement-of-an-array	🔒	📝	Medium
635	design-log-storage-system	🔒	📝	Medium
636	exclusive-time-of-functions		📝	Medium
637	average-of-levels-in-binary-tree	Cpp	📝	Easy
638	shopping-offers	Cpp	📝	Medium
639	decode-ways-ii		📝	Hard
640	solve-the-equation		📝	Medium
642	design-search-autocomplete-system	🔒	📝	Hard
643	maximum-average-subarray-i		📝	Easy
644	maximum-average-subarray-ii	🔒	📝	Hard
645	set-mismatch		📝	Easy
646	maximum-length-of-pair-chain	Cpp	📝	Medium
647	palindromic-substrings	Cpp	📝	Medium
648	replace-words		📝	Medium
649	dota2-senate	Cpp	📝	Medium
650	2-keys-keyboard	Cpp	📝	Medium
651	4-keys-keyboard	🔒	📝	Medium
652	find-duplicate-subtrees		📝	Medium
653	two-sum-iv-input-is-a-bst	Cpp	📝	Easy
654	maximum-binary-tree	Cpp	📝	Medium
655	print-binary-tree		📝	Medium
656	coin-path	🔒	📝	Hard
657	robot-return-to-origin	Cpp	📝	Easy
658	find-k-closest-elements	Cpp	📝	Medium
659	split-array-into-consecutive-subsequences		📝	Medium
660	remove-9	🔒	📝	Hard
661	image-smoother	Cpp	📝	Easy
662	maximum-width-of-binary-tree	Cpp	📝	Medium
663	equal-tree-partition	🔒	📝	Medium
664	strange-printer		📝	Hard
665	non-decreasing-array		📝	Easy
666	path-sum-iv	🔒	📝	Medium
667	beautiful-arrangement-ii		📝	Medium
668	kth-smallest-number-in-multiplication-table		📝	Hard
669	trim-a-binary-search-tree	Cpp	📝	Easy
670	maximum-swap	Cpp	📝	Medium
671	second-minimum-node-in-a-binary-tree		📝	Easy
672	bulb-switcher-ii		📝	Medium
673	number-of-longest-increasing-subsequence		📝	Medium
674	longest-continuous-increasing-subsequence		📝	Easy
675	cut-off-trees-for-golf-event		📝	Hard
676	implement-magic-dictionary	Cpp	📝	Medium
677	map-sum-pairs	Cpp	📝	Medium
678	valid-parenthesis-string	Cpp	📝	Medium
679	24-game		📝	Hard
680	valid-palindrome-ii		📝	Easy
681	next-closest-time	🔒	📝	Medium
682	baseball-game	Cpp	📝	Easy
683	k-empty-slots	🔒	📝	Hard
684	redundant-connection	Cpp	📝	Medium
685	redundant-connection-ii		📝	Hard
686	repeated-string-match	Cpp	📝	Medium
687	longest-univalue-path	Cpp	📝	Medium
688	knight-probability-in-chessboard	Cpp	📝	Medium
689	maximum-sum-of-3-non-overlapping-subarrays		📝	Hard
690	employee-importance		📝	Easy
691	stickers-to-spell-word		📝	Hard
692	top-k-frequent-words	Cpp	📝	Medium
693	binary-number-with-alternating-bits	Cpp	📝	Easy
694	number-of-distinct-islands	🔒	📝	Medium
695	max-area-of-island		📝	Medium
696	count-binary-substrings		📝	Easy
697	degree-of-an-array		📝	Easy
698	partition-to-k-equal-sum-subsets	Cpp	📝	Medium
699	falling-squares		📝	Hard
711	number-of-distinct-islands-ii	🔒	📝	Hard
712	minimum-ascii-delete-sum-for-two-strings		📝	Medium
713	subarray-product-less-than-k	Cpp	📝	Medium
714	best-time-to-buy-and-sell-stock-with-transaction-fee	Cpp	📝	Medium
715	range-module		📝	Hard
716	max-stack	🔒	📝	Easy
717	1-bit-and-2-bit-characters		📝	Easy
718	maximum-length-of-repeated-subarray		📝	Medium
719	find-k-th-smallest-pair-distance		📝	Hard
720	longest-word-in-dictionary	Cpp	📝	Easy
721	accounts-merge	Cpp	📝	Medium
722	remove-comments	Cpp	📝	Medium
723	candy-crush	🔒	📝	Medium
724	find-pivot-index		📝	Easy
725	split-linked-list-in-parts		📝	Medium
726	number-of-atoms		📝	Hard
727	minimum-window-subsequence	🔒	📝	Hard
728	self-dividing-numbers	Cpp	📝	Easy
729	my-calendar-i		📝	Medium
730	count-different-palindromic-subsequences		📝	Hard
731	my-calendar-ii	Cpp	📝	Medium
732	my-calendar-iii		📝	Hard
733	flood-fill		📝	Easy
734	sentence-similarity	🔒	📝	Easy
735	asteroid-collision		📝	Medium
736	parse-lisp-expression		📝	Hard
737	sentence-similarity-ii	🔒	📝	Medium
738	monotone-increasing-digits		📝	Medium
739	daily-temperatures	Cpp	📝	Medium
740	delete-and-earn		📝	Medium
741	cherry-pickup		📝	Hard
709	to-lower-case	Cpp	📝	Easy
742	closest-leaf-in-a-binary-tree	🔒	📝	Medium
743	network-delay-time	Cpp	📝	Medium
744	find-smallest-letter-greater-than-target	Cpp	📝	Easy
745	prefix-and-suffix-search		📝	Hard
746	min-cost-climbing-stairs		📝	Easy
747	largest-number-at-least-twice-of-others		📝	Easy
748	shortest-completing-word		📝	Easy
749	contain-virus		📝	Hard
750	number-of-corner-rectangles	🔒	📝	Medium
751	ip-to-cidr	🔒	📝	Medium
752	open-the-lock		📝	Medium
753	cracking-the-safe		📝	Hard
754	reach-a-number	Cpp	📝	Medium
755	pour-water	🔒	📝	Medium
756	pyramid-transition-matrix	Cpp	📝	Medium
426	convert-binary-search-tree-to-sorted-doubly-linked-list	🔒	📝	Medium
757	set-intersection-size-at-least-two		📝	Hard
758	bold-words-in-string	🔒	📝	Easy
759	employee-free-time	🔒	📝	Hard
760	find-anagram-mappings	🔒	📝	Easy
761	special-binary-string		📝	Hard
429	n-ary-tree-level-order-traversal	Cpp	📝	Medium
428	serialize-and-deserialize-n-ary-tree	🔒	📝	Hard
430	flatten-a-multilevel-doubly-linked-list	Cpp	📝	Medium
762	prime-number-of-set-bits-in-binary-representation	Cpp	📝	Easy
763	partition-labels	Cpp	📝	Medium
764	largest-plus-sign		📝	Medium
765	couples-holding-hands	Cpp	📝	Hard
431	encode-n-ary-tree-to-binary-tree	🔒	📝	Hard
427	construct-quad-tree	Cpp		Medium
558	logical-or-of-two-binary-grids-represented-as-quad-trees	Cpp		Medium
559	maximum-depth-of-n-ary-tree	Cpp	📝	Easy
589	n-ary-tree-preorder-traversal	Cpp	📝	Easy
590	n-ary-tree-postorder-traversal	Cpp	📝	Easy
766	toeplitz-matrix	Cpp	📝	Easy
767	reorganize-string		📝	Medium
768	max-chunks-to-make-sorted-ii		📝	Hard
769	max-chunks-to-make-sorted	Cpp	📝	Medium
770	basic-calculator-iv		📝	Hard
771	jewels-and-stones	Cpp	📝	Easy
700	search-in-a-binary-search-tree	Cpp	📝	Easy
701	insert-into-a-binary-search-tree	Cpp	📝	Medium
772	basic-calculator-iii	🔒		Hard
702	search-in-a-sorted-array-of-unknown-size	🔒	📝	Medium
773	sliding-puzzle		📝	Hard
774	minimize-max-distance-to-gas-station	🔒	📝	Hard
703	kth-largest-element-in-a-stream	Cpp		Easy
775	global-and-local-inversions		📝	Medium
776	split-bst	🔒	📝	Medium
704	binary-search		📝	Easy
777	swap-adjacent-in-lr-string		📝	Medium
778	swim-in-rising-water		📝	Hard
779	k-th-symbol-in-grammar		📝	Medium
780	reaching-points		📝	Hard
781	rabbits-in-forest		📝	Medium
782	transform-to-chessboard		📝	Hard
783	minimum-distance-between-bst-nodes		📝	Easy
784	letter-case-permutation		📝	Medium
785	is-graph-bipartite	Cpp	📝	Medium
786	k-th-smallest-prime-fraction		📝	Hard
787	cheapest-flights-within-k-stops	Cpp	📝	Medium
788	rotated-digits		📝	Easy
789	escape-the-ghosts		📝	Medium
790	domino-and-tromino-tiling	Cpp	📝	Medium
791	custom-sort-string	Cpp	📝	Medium
792	number-of-matching-subsequences	Cpp	📝	Medium
793	preimage-size-of-factorial-zeroes-function		📝	Hard
794	valid-tic-tac-toe-state	Cpp	📝	Medium
795	number-of-subarrays-with-bounded-maximum	Cpp	📝	Medium
796	rotate-string		📝	Easy
797	all-paths-from-source-to-target	Cpp	📝	Medium
798	smallest-rotation-with-highest-score		📝	Hard
799	champagne-tower		📝	Medium
705	design-hashset	Cpp	📝	Easy
706	design-hashmap		📝	Easy
800	similar-rgb-color	🔒	📝	Easy
801	minimum-swaps-to-make-sequences-increasing	Cpp	📝	Medium
802	find-eventual-safe-states		📝	Medium
803	bricks-falling-when-hit		📝	Hard
804	unique-morse-code-words	Cpp	📝	Easy
805	split-array-with-same-average		📝	Hard
806	number-of-lines-to-write-string	Cpp	📝	Easy
807	max-increase-to-keep-city-skyline	Cpp	📝	Medium
808	soup-servings		📝	Medium
809	expressive-words		📝	Medium
810	chalkboard-xor-game		📝	Hard
811	subdomain-visit-count	Cpp	📝	Easy
812	largest-triangle-area		📝	Easy
813	largest-sum-of-averages		📝	Medium
814	binary-tree-pruning	Cpp	📝	Medium
815	bus-routes		📝	Hard
816	ambiguous-coordinates		📝	Medium
817	linked-list-components		📝	Medium
818	race-car		📝	Hard
819	most-common-word		📝	Easy
707	design-linked-list		📝	Medium
820	short-encoding-of-words		📝	Medium
821	shortest-distance-to-a-character	Cpp	📝	Easy
822	card-flipping-game		📝	Medium
823	binary-trees-with-factors		📝	Medium
708	insert-into-a-sorted-circular-linked-list	🔒	📝	Medium
824	goat-latin		📝	Easy
825	friends-of-appropriate-ages		📝	Medium
826	most-profit-assigning-work		📝	Medium
827	making-a-large-island		📝	Hard
828	count-unique-characters-of-all-substrings-of-a-given-string		📝	Hard
829	consecutive-numbers-sum		📝	Hard
830	positions-of-large-groups		📝	Easy
831	masking-personal-information	Cpp	📝	Medium
641	design-circular-deque	Cpp		Medium
622	design-circular-queue	Cpp	📝	Medium
832	flipping-an-image	Cpp	📝	Easy
833	find-and-replace-in-string		📝	Medium
834	sum-of-distances-in-tree	Cpp	📝	Hard
835	image-overlap		📝	Medium
489	robot-room-cleaner	🔒	📝	Hard
836	rectangle-overlap		📝	Easy
837	new-21-game		📝	Medium
838	push-dominoes		📝	Medium
839	similar-string-groups		📝	Hard
840	magic-squares-in-grid	Cpp	📝	Medium
841	keys-and-rooms	Cpp	📝	Medium
842	split-array-into-fibonacci-sequence		📝	Medium
843	guess-the-word		📝	Hard
844	backspace-string-compare	Cpp	📝	Easy
845	longest-mountain-in-array	Cpp	📝	Medium
846	hand-of-straights	Cpp	📝	Medium
847	shortest-path-visiting-all-nodes	Cpp	📝	Hard
848	shifting-letters		📝	Medium
849	maximize-distance-to-closest-person	Cpp	📝	Medium
850	rectangle-area-ii		📝	Hard
851	loud-and-rich		📝	Medium
852	peak-index-in-a-mountain-array	Cpp	📝	Easy
853	car-fleet		📝	Medium
854	k-similar-strings		📝	Hard
855	exam-room		📝	Medium
856	score-of-parentheses		📝	Medium
857	minimum-cost-to-hire-k-workers	Cpp	📝	Hard
858	mirror-reflection		📝	Medium
859	buddy-strings		📝	Easy
860	lemonade-change		📝	Easy
861	score-after-flipping-matrix	Cpp	📝	Medium
862	shortest-subarray-with-sum-at-least-k	Cpp	📝	Hard
863	all-nodes-distance-k-in-binary-tree		📝	Medium
710	random-pick-with-blacklist		📝	Hard
864	shortest-path-to-get-all-keys		📝	Hard
865	smallest-subtree-with-all-the-deepest-nodes		📝	Medium
866	prime-palindrome		📝	Medium
867	transpose-matrix	Cpp	📝	Easy
868	binary-gap	Cpp	📝	Easy
869	reordered-power-of-2		📝	Medium
870	advantage-shuffle		📝	Medium
871	minimum-number-of-refueling-stops		📝	Hard
470	implement-rand10-using-rand7	Cpp	📝	Medium
872	leaf-similar-trees	Cpp	📝	Easy
873	length-of-longest-fibonacci-subsequence	Cpp	📝	Medium
874	walking-robot-simulation		📝	Easy
875	koko-eating-bananas		📝	Medium
876	middle-of-the-linked-list	Cpp	📝	Easy
877	stone-game	Cpp	📝	Medium
878	nth-magical-number		📝	Hard
879	profitable-schemes	Cpp	📝	Hard
528	random-pick-with-weight	Cpp	📝	Medium
519	random-flip-matrix	Cpp	📝	Medium
497	random-point-in-non-overlapping-rectangles	Cpp	📝	Medium
478	generate-random-point-in-a-circle	Cpp	📝	Medium
880	decoded-string-at-index		📝	Medium
881	boats-to-save-people		📝	Medium
882	reachable-nodes-in-subdivided-graph		📝	Hard
883	projection-area-of-3d-shapes	Cpp	📝	Easy
884	uncommon-words-from-two-sentences	Cpp	📝	Easy
885	spiral-matrix-iii	Cpp	📝	Medium
886	possible-bipartition		📝	Medium
887	super-egg-drop		📝	Hard
888	fair-candy-swap	Cpp	📝	Easy
889	construct-binary-tree-from-preorder-and-postorder-traversal		📝	Medium
890	find-and-replace-pattern	Cpp	📝	Medium
891	sum-of-subsequence-widths		📝	Hard
892	surface-area-of-3d-shapes	Cpp	📝	Easy
893	groups-of-special-equivalent-strings		📝	Easy
894	all-possible-full-binary-trees		📝	Medium
895	maximum-frequency-stack		📝	Hard
896	monotonic-array		📝	Easy
897	increasing-order-search-tree		📝	Easy
898	bitwise-ors-of-subarrays		📝	Medium
899	orderly-queue		📝	Hard
900	rle-iterator	Cpp	📝	Medium
901	online-stock-span	Cpp	📝	Medium
902	numbers-at-most-n-given-digit-set	Cpp	📝	Hard
903	valid-permutations-for-di-sequence	Cpp	📝	Hard
904	fruit-into-baskets		📝	Medium
905	sort-array-by-parity		📝	Easy
906	super-palindromes		📝	Hard
907	sum-of-subarray-minimums	Cpp	📝	Medium
908	smallest-range-i		📝	Easy
909	snakes-and-ladders		📝	Medium
910	smallest-range-ii		📝	Medium
911	online-election		📝	Medium
912	sort-an-array			Medium
913	cat-and-mouse		📝	Hard
914	x-of-a-kind-in-a-deck-of-cards		📝	Easy
915	partition-array-into-disjoint-intervals		📝	Medium
916	word-subsets	Cpp	📝	Medium
917	reverse-only-letters	Cpp	📝	Easy
918	maximum-sum-circular-subarray		📝	Medium
919	complete-binary-tree-inserter	Cpp	📝	Medium
920	number-of-music-playlists	Cpp	📝	Hard
921	minimum-add-to-make-parentheses-valid		📝	Medium
922	sort-array-by-parity-ii		📝	Easy
923	3sum-with-multiplicity		📝	Medium
924	minimize-malware-spread		📝	Hard
925	long-pressed-name	Cpp	📝	Easy
926	flip-string-to-monotone-increasing	Cpp	📝	Medium
927	three-equal-parts		📝	Hard
928	minimize-malware-spread-ii		📝	Hard
929	unique-email-addresses	Cpp	📝	Easy
930	binary-subarrays-with-sum	Cpp	📝	Medium
931	minimum-falling-path-sum		📝	Medium
932	beautiful-array		📝	Medium
933	number-of-recent-calls		📝	Easy
934	shortest-bridge	Cpp	📝	Medium
935	knight-dialer		📝	Medium
936	stamping-the-sequence		📝	Hard
937	reorder-data-in-log-files		📝	Easy
938	range-sum-of-bst		📝	Easy
939	minimum-area-rectangle	Cpp	📝	Medium
940	distinct-subsequences-ii		📝	Hard
941	valid-mountain-array		📝	Easy
942	di-string-match		📝	Easy
943	find-the-shortest-superstring	Cpp	📝	Hard
944	delete-columns-to-make-sorted		📝	Easy
945	minimum-increment-to-make-array-unique		📝	Medium
946	validate-stack-sequences		📝	Medium
947	most-stones-removed-with-same-row-or-column		📝	Medium
948	bag-of-tokens		📝	Medium
949	largest-time-for-given-digits		📝	Medium
950	reveal-cards-in-increasing-order		📝	Medium
951	flip-equivalent-binary-trees		📝	Medium
952	largest-component-size-by-common-factor		📝	Hard
953	verifying-an-alien-dictionary		📝	Easy
954	array-of-doubled-pairs		📝	Medium
955	delete-columns-to-make-sorted-ii		📝	Medium
956	tallest-billboard		📝	Hard
957	prison-cells-after-n-days		📝	Medium
958	check-completeness-of-a-binary-tree		📝	Medium
959	regions-cut-by-slashes	Cpp	📝	Medium
960	delete-columns-to-make-sorted-iii		📝	Hard
961	n-repeated-element-in-size-2n-array		📝	Easy
962	maximum-width-ramp		📝	Medium
963	minimum-area-rectangle-ii		📝	Medium
964	least-operators-to-express-number		📝	Hard
965	univalued-binary-tree		📝	Easy
966	vowel-spellchecker		📝	Medium
967	numbers-with-same-consecutive-differences		📝	Medium
968	binary-tree-cameras		📝	Hard
969	pancake-sorting		📝	Medium
970	powerful-integers		📝	Easy
971	flip-binary-tree-to-match-preorder-traversal		📝	Medium
972	equal-rational-numbers		📝	Hard
509	fibonacci-number	Cpp	📝	Easy
973	k-closest-points-to-origin		📝	Medium
974	subarray-sums-divisible-by-k		📝	Medium
975	odd-even-jump		📝	Hard
976	largest-perimeter-triangle		📝	Easy
977	squares-of-a-sorted-array		📝	Easy
978	longest-turbulent-subarray		📝	Medium
979	distribute-coins-in-binary-tree		📝	Medium
980	unique-paths-iii		📝	Hard
981	time-based-key-value-store		📝	Medium
982	triples-with-bitwise-and-equal-to-zero			Hard
983	minimum-cost-for-tickets		📝	Medium
984	string-without-aaa-or-bbb	Cpp	📝	Medium
985	sum-of-even-numbers-after-queries		📝	Easy
986	interval-list-intersections		📝	Medium
987	vertical-order-traversal-of-a-binary-tree		📝	Medium
988	smallest-string-starting-from-leaf		📝	Medium
989	add-to-array-form-of-integer		📝	Easy
990	satisfiability-of-equality-equations		📝	Medium
991	broken-calculator		📝	Medium
992	subarrays-with-k-different-integers	Cpp	📝	Hard
993	cousins-in-binary-tree		📝	Easy
994	rotting-oranges		📝	Medium
995	minimum-number-of-k-consecutive-bit-flips		📝	Hard
996	number-of-squareful-arrays		📝	Hard
997	find-the-town-judge		📝	Easy
998	maximum-binary-tree-ii			Medium
999	available-captures-for-rook			Easy
1000	minimum-cost-to-merge-stones			Hard
1001	grid-illumination			Hard
1002	find-common-characters			Easy
1003	check-if-word-is-valid-after-substitutions			Medium
1004	max-consecutive-ones-iii		📝	Medium
1005	maximize-sum-of-array-after-k-negations			Easy
1006	clumsy-factorial			Medium
1007	minimum-domino-rotations-for-equal-row		📝	Medium
1008	construct-binary-search-tree-from-preorder-traversal		📝	Medium
1055	shortest-way-to-form-string	🔒		Medium
1057	campus-bikes	🔒		Medium
1058	minimize-rounding-error-to-meet-target	🔒		Medium
1009	complement-of-base-10-integer		📝	Easy
1010	pairs-of-songs-with-total-durations-divisible-by-60		📝	Easy
1011	capacity-to-ship-packages-within-d-days			Medium
1012	numbers-with-repeated-digits			Hard
1061	lexicographically-smallest-equivalent-string	🔒		Medium
1060	missing-element-in-sorted-array	🔒	📝	Medium
1062	longest-repeating-substring	🔒	📝	Medium
1063	number-of-valid-subarrays	🔒		Hard
1013	partition-array-into-three-parts-with-equal-sum			Easy
1014	best-sightseeing-pair			Medium
1015	smallest-integer-divisible-by-k		📝	Medium
1016	binary-string-with-substrings-representing-1-to-n			Medium
1064	fixed-point	🔒		Easy
1066	campus-bikes-ii	🔒		Medium
1067	digit-count-in-range	🔒		Hard
1056	confusing-number	🔒		Easy
1017	convert-to-base-2			Medium
1018	binary-prefix-divisible-by-5			Easy
1019	next-greater-node-in-linked-list			Medium
1020	number-of-enclaves			Medium
1086	high-five	🔒		Easy
1065	index-pairs-of-a-string	🔒		Easy
1087	brace-expansion	🔒		Medium
1088	confusing-number-ii	🔒		Hard
1021	remove-outermost-parentheses			Easy
1022	sum-of-root-to-leaf-binary-numbers		📝	Easy
1023	camelcase-matching			Medium
1024	video-stitching			Medium
1085	sum-of-digits-in-the-minimum-number	🔒		Easy
1099	two-sum-less-than-k	🔒	📝	Easy
1100	find-k-length-substrings-with-no-repeated-characters	🔒		Medium
1101	the-earliest-moment-when-everyone-become-friends	🔒		Medium
1025	divisor-game			Easy
1027	longest-arithmetic-subsequence			Medium
1118	number-of-days-in-a-month	🔒		Easy
1119	remove-vowels-from-a-string	🔒		Easy
1134	armstrong-number	🔒		Easy
1120	maximum-average-subtree	🔒	📝	Medium
1026	maximum-difference-between-node-and-ancestor		📝	Medium
1028	recover-a-tree-from-preorder-traversal			Hard
1030	matrix-cells-in-distance-order			Easy
1029	two-city-scheduling		📝	Medium
1031	maximum-sum-of-two-non-overlapping-subarrays			Medium
1032	stream-of-characters		📝	Hard
1133	largest-unique-number	🔒		Easy
1102	path-with-maximum-minimum-value	🔒		Medium
1135	connecting-cities-with-minimum-cost	🔒		Medium
1136	parallel-courses	🔒		Hard
1150	check-if-a-number-is-majority-element-in-a-sorted-array	🔒		Easy
1033	moving-stones-until-consecutive			Easy
1034	coloring-a-border			Medium
1035	uncrossed-lines			Medium
1036	escape-a-large-maze			Hard
1151	minimum-swaps-to-group-all-1s-together	🔒	📝	Medium
1152	analyze-user-website-visit-pattern	🔒		Medium
1039	minimum-score-triangulation-of-polygon			Medium
1160	find-words-that-can-be-formed-by-characters			Easy
1040	moving-stones-until-consecutive-ii			Medium
1038	binary-search-tree-to-greater-sum-tree			Medium
1037	valid-boomerang			Easy
1161	maximum-level-sum-of-a-binary-tree		📝	Medium
1162	as-far-from-land-as-possible			Medium
1121	divide-array-into-increasing-sequences	🔒		Hard
1041	robot-bounded-in-circle		📝	Medium
1042	flower-planting-with-no-adjacent			Medium
1043	partition-array-for-maximum-sum			Medium
1044	longest-duplicate-substring		📝	Hard
1165	single-row-keyboard	🔒		Easy
1153	string-transforms-into-another-string	🔒		Hard
1166	design-file-system	🔒		Medium
1167	minimum-cost-to-connect-sticks	🔒	📝	Medium
1046	last-stone-weight		📝	Easy
1047	remove-all-adjacent-duplicates-in-string		📝	Easy
1048	longest-string-chain			Medium
1049	last-stone-weight-ii			Medium
1180	count-substrings-with-only-one-distinct-letter	🔒		Easy
1181	before-and-after-puzzle	🔒		Medium
1163	last-substring-in-lexicographical-order	Cpp		Hard
1182	shortest-distance-to-target-color	🔒		Medium
1051	height-checker			Easy
1052	grumpy-bookstore-owner			Medium
1053	previous-permutation-with-one-swap			Medium
1054	distant-barcodes			Medium
1196	how-many-apples-can-you-put-into-the-basket	🔒		Easy
1197	minimum-knight-moves	🔒		Medium
1198	find-smallest-common-element-in-all-rows	🔒	📝	Medium
1168	optimize-water-distribution-in-a-village	🔒		Hard
1074	number-of-submatrices-that-sum-to-target		📝	Hard
1071	greatest-common-divisor-of-strings			Easy
1072	flip-columns-for-maximum-number-of-equal-rows			Medium
1073	adding-two-negabinary-numbers			Medium
1213	intersection-of-three-sorted-arrays	🔒	📝	Easy
1214	two-sum-bsts	🔒	📝	Medium
1215	stepping-numbers	🔒		Medium
1183	maximum-number-of-ones	🔒		Hard
1078	occurrences-after-bigram			Easy
1080	insufficient-nodes-in-root-to-leaf-paths			Medium
1081	smallest-subsequence-of-distinct-characters			Medium
1079	letter-tile-possibilities			Medium
1228	missing-number-in-arithmetic-progression	🔒		Easy
1229	meeting-scheduler	🔒		Medium
1230	toss-strange-coins	🔒		Medium
1199	minimum-time-to-build-blocks	🔒		Hard
1089	duplicate-zeros		📝	Easy
1090	largest-values-from-labels			Medium
1092	shortest-common-supersequence			Hard
1091	shortest-path-in-binary-matrix		📝	Medium
1243	array-transformation	🔒		Easy
1244	design-a-leaderboard	🔒		Medium
1245	tree-diameter	🔒		Medium
1216	valid-palindrome-iii	🔒		Hard
1093	statistics-from-a-large-sample			Medium
1094	car-pooling		📝	Medium
1095	find-in-mountain-array			Hard
1096	brace-expansion-ii			Hard
1256	encode-number	🔒		Medium
1257	smallest-common-region	🔒		Medium
1258	synonymous-sentences	🔒		Medium
1231	divide-chocolate	🔒		Hard
1104	path-in-zigzag-labelled-binary-tree			Medium
1103	distribute-candies-to-people		📝	Easy
1105	filling-bookcase-shelves			Medium
1106	parsing-a-boolean-expression			Hard
1271	hexspeak	🔒		Easy
1272	remove-interval	🔒	📝	Medium
1273	delete-tree-nodes	🔒		Medium
1246	palindrome-removal	🔒		Hard
1108	defanging-an-ip-address			Easy
1109	corporate-flight-bookings			Medium
1110	delete-nodes-and-return-forest			Medium
1111	maximum-nesting-depth-of-two-valid-parentheses-strings			Medium
1619	mean-of-array-after-removing-some-elements			Easy
1286	iterator-for-combination		📝	Medium
1291	sequential-digits		📝	Medium
1259	handshakes-that-dont-cross	🔒		Hard
1122	relative-sort-array			Easy
1123	lowest-common-ancestor-of-deepest-leaves			Medium
1124	longest-well-performing-interval			Medium
1125	smallest-sufficient-team	Cpp		Hard
1287	element-appearing-more-than-25-in-sorted-array			Easy
1288	remove-covered-intervals		📝	Medium
1627	graph-connectivity-with-threshold			Hard
1289	minimum-falling-path-sum-ii			Hard
1128	number-of-equivalent-domino-pairs			Easy
1130	minimum-cost-tree-from-leaf-values			Medium
1129	shortest-path-with-alternating-colors			Medium
1131	maximum-of-absolute-value-expression			Medium
1299	replace-elements-with-greatest-element-on-right-side			Easy
1300	sum-of-mutated-array-closest-to-target			Medium
1274	number-of-ships-in-a-rectangle	🔒		Hard
1301	number-of-paths-with-max-score			Hard
1137	n-th-tribonacci-number		📝	Easy
1138	alphabet-board-path			Medium
1139	largest-1-bordered-square			Medium
1140	stone-game-ii			Medium
1313	decompress-run-length-encoded-list			Easy
1314	matrix-block-sum			Medium
1315	sum-of-nodes-with-even-valued-grandparent			Medium
1316	distinct-echo-substrings			Hard
1144	decrease-elements-to-make-array-zigzag			Medium
1145	binary-tree-coloring-game			Medium
1146	snapshot-array			Medium
1143	longest-common-subsequence		📝	Medium
1147	longest-chunked-palindrome-decomposition			Hard
1328	break-a-palindrome			Medium
1329	sort-the-matrix-diagonally			Medium
1302	deepest-leaves-sum		📝	Medium
1330	reverse-subarray-to-maximize-array-value			Hard
1331	rank-transform-of-an-array			Easy
1632	rank-transform-of-a-matrix		📝	Hard
1154	day-of-the-year			Easy
1156	swap-for-longest-repeated-character-substring			Medium
1157	online-majority-element-in-subarray			Hard
1155	number-of-dice-rolls-with-target-sum			Medium
1171	remove-zero-sum-consecutive-nodes-from-linked-list			Medium
1172	dinner-plate-stacks			Hard
1236	web-crawler	🔒		Medium
1169	invalid-transactions			Medium
1170	compare-strings-by-frequency-of-the-smallest-character			Easy
1360	number-of-days-between-two-dates			Easy
1361	validate-binary-tree-nodes			Medium
1362	closest-divisors			Medium
1363	largest-multiple-of-three			Hard
1175	prime-arrangements			Easy
1176	diet-plan-performance	🔒		Easy
1177	can-make-palindrome-from-substring			Medium
1178	number-of-valid-words-for-each-puzzle			Hard
1507	reformat-date			Easy
1390	four-divisors			Medium
1382	balance-a-binary-search-tree			Medium
1425	constrained-subsequence-sum			Hard
1184	distance-between-bus-stops			Easy
1186	maximum-subarray-sum-with-one-deletion			Medium
1185	day-of-the-week			Easy
1187	make-array-strictly-increasing			Hard
1550	three-consecutive-odds			Easy
1483	kth-ancestor-of-a-tree-node			Hard
1189	maximum-number-of-balloons			Easy
1190	reverse-substrings-between-each-pair-of-parentheses			Medium
1191	k-concatenation-maximum-sum			Medium
1192	critical-connections-in-a-network			Hard
1405	longest-happy-string			Medium
1200	minimum-absolute-difference			Easy
1201	ugly-number-iii			Medium
1202	smallest-string-with-swaps			Medium
1203	sort-items-by-groups-respecting-dependencies			Hard
1207	unique-number-of-occurrences			Easy
1209	remove-all-adjacent-duplicates-in-string-ii		📝	Medium
1208	get-equal-substrings-within-budget			Medium
1210	minimum-moves-to-reach-target-with-rotations			Hard
1514	path-with-maximum-probability			Medium
1217	minimum-cost-to-move-chips-to-the-same-position		📝	Easy
1218	longest-arithmetic-subsequence-of-given-difference			Medium
1219	path-with-maximum-gold			Medium
1220	count-vowels-permutation			Hard
1206	design-skiplist			Hard
1221	split-a-string-in-balanced-strings			Easy
1222	queens-that-can-attack-the-king			Medium
1223	dice-roll-simulation			Medium
1224	maximum-equal-frequency			Hard
1427	perform-string-shifts	🔒	📝	Easy
1232	check-if-it-is-a-straight-line			Easy
1233	remove-sub-folders-from-the-filesystem			Medium
1234	replace-the-substring-for-balanced-string			Medium
1235	maximum-profit-in-job-scheduling			Hard
1237	find-positive-integer-solution-for-a-given-equation			Easy
1238	circular-permutation-in-binary-representation			Medium
1239	maximum-length-of-a-concatenated-string-with-unique-characters			Medium
1240	tiling-a-rectangle-with-the-fewest-squares			Hard
1227	airplane-seat-assignment-probability			Medium
1429	first-unique-number	🔒	📝	Medium
1247	minimum-swaps-to-make-strings-equal			Medium
1248	count-number-of-nice-subarrays	Cpp		Medium
1249	minimum-remove-to-make-valid-parentheses		📝	Medium
1250	check-if-it-is-a-good-array			Hard
1428	leftmost-column-with-at-least-a-one	🔒	📝	Medium
1252	cells-with-odd-values-in-a-matrix			Easy
1253	reconstruct-a-2-row-binary-matrix			Medium
1254	number-of-closed-islands			Medium
1255	maximum-score-words-formed-by-letters			Hard
1618	maximum-font-to-fit-a-sentence-in-a-screen	🔒		Medium
1260	shift-2d-grid		📝	Easy
1261	find-elements-in-a-contaminated-binary-tree			Medium
1262	greatest-sum-divisible-by-three			Medium
1263	minimum-moves-to-move-a-box-to-their-target-location			Hard
1426	counting-elements	🔒	📝	Easy
1266	minimum-time-visiting-all-points			Easy
1267	count-servers-that-communicate			Medium
1268	search-suggestions-system			Medium
1269	number-of-ways-to-stay-in-the-same-place-after-some-steps			Hard
1275	find-winner-on-a-tic-tac-toe-game			Easy
1276	number-of-burgers-with-no-waste-of-ingredients			Medium
1277	count-square-submatrices-with-all-ones			Medium
1278	palindrome-partitioning-iii			Hard
1265	print-immutable-linked-list-in-reverse	🔒		Medium
1281	subtract-the-product-and-sum-of-digits-of-an-integer			Easy
1282	group-the-people-given-the-group-size-they-belong-to			Medium
1283	find-the-smallest-divisor-given-a-threshold		📝	Medium
1284	minimum-number-of-flips-to-convert-binary-matrix-to-zero-matrix			Hard
1290	convert-binary-number-in-a-linked-list-to-integer		📝	Easy
1292	maximum-side-length-of-a-square-with-sum-less-than-or-equal-to-threshold			Medium
1293	shortest-path-in-a-grid-with-obstacles-elimination			Hard
1295	find-numbers-with-even-number-of-digits			Easy
1296	divide-array-in-sets-of-k-consecutive-numbers			Medium
1297	maximum-number-of-occurrences-of-a-substring			Medium
1298	maximum-candies-you-can-get-from-boxes			Hard
1304	find-n-unique-integers-sum-up-to-zero			Easy
1305	all-elements-in-two-binary-search-trees		📝	Medium
1306	jump-game-iii	Cpp	📝	Medium
1307	verbal-arithmetic-puzzle			Hard
1430	check-if-a-string-is-a-valid-sequence-from-root-to-leaves-path-in-a-binary-tree	🔒		Medium
1309	decrypt-string-from-alphabet-to-integer-mapping			Easy
1310	xor-queries-of-a-subarray			Medium
1311	get-watched-videos-by-your-friends			Medium
1312	minimum-insertion-steps-to-make-a-string-palindrome			Hard
1317	convert-integer-to-the-sum-of-two-no-zero-integers			Easy
1318	minimum-flips-to-make-a-or-b-equal-to-c			Medium
1319	number-of-operations-to-make-network-connected			Medium
1320	minimum-distance-to-type-a-word-using-two-fingers			Hard
1342	number-of-steps-to-reduce-a-number-to-zero		📝	Easy
1343	number-of-sub-arrays-of-size-k-and-average-greater-than-or-equal-to-threshold			Medium
1344	angle-between-hands-of-a-clock		📝	Medium
1345	jump-game-iv		📝	Hard
1323	maximum-69-number			Easy
1324	print-words-vertically			Medium
1325	delete-leaves-with-a-given-value			Medium
1326	minimum-number-of-taps-to-open-to-water-a-garden			Hard
1332	remove-palindromic-subsequences		📝	Easy
1333	filter-restaurants-by-vegan-friendly-price-and-distance			Medium
1334	find-the-city-with-the-smallest-number-of-neighbors-at-a-threshold-distance			Medium
1335	minimum-difficulty-of-a-job-schedule			Hard
1356	sort-integers-by-the-number-of-1-bits			Easy
1357	apply-discount-every-n-orders			Medium
1358	number-of-substrings-containing-all-three-characters			Medium
1359	count-all-valid-pickup-and-delivery-options			Hard
1337	the-k-weakest-rows-in-a-matrix		📝	Easy
1338	reduce-array-size-to-the-half		📝	Medium
1339	maximum-product-of-splitted-binary-tree		📝	Medium
1340	jump-game-v			Hard
1346	check-if-n-and-its-double-exist			Easy
1347	minimum-number-of-steps-to-make-two-strings-anagram			Medium
1348	tweet-counts-per-frequency			Medium
1349	maximum-students-taking-exam			Hard
1370	increasing-decreasing-string			Easy
1371	find-the-longest-substring-containing-vowels-in-even-counts			Medium
1372	longest-zigzag-path-in-a-binary-tree			Medium
1373	maximum-sum-bst-in-binary-tree			Hard
1351	count-negative-numbers-in-a-sorted-matrix			Easy
1352	product-of-the-last-k-numbers			Medium
1353	maximum-number-of-events-that-can-be-attended			Medium
1354	construct-target-array-with-multiple-sums	Cpp	📝	Hard
1365	how-many-numbers-are-smaller-than-the-current-number			Easy
1366	rank-teams-by-votes			Medium
1367	linked-list-in-binary-tree			Medium
1368	minimum-cost-to-make-at-least-one-valid-path-in-a-grid			Hard
1385	find-the-distance-value-between-two-arrays			Easy
1386	cinema-seat-allocation			Medium
1387	sort-integers-by-the-power-value			Medium
1388	pizza-with-3n-slices			Hard
1374	generate-a-string-with-characters-that-have-odd-counts			Easy
1375	bulb-switcher-iii			Medium
1376	time-needed-to-inform-all-employees			Medium
1377	frog-position-after-t-seconds			Hard
1380	lucky-numbers-in-a-matrix			Easy
1381	design-a-stack-with-increment-operation			Medium
1379	find-a-corresponding-node-of-a-binary-tree-in-a-clone-of-that-tree			Medium
1383	maximum-performance-of-a-team			Hard
1399	count-largest-group			Easy
1401	circle-and-rectangle-overlapping			Medium
1400	construct-k-palindrome-strings			Medium
1402	reducing-dishes	Cpp		Hard
1389	create-target-array-in-the-given-order			Easy
1391	check-if-there-is-a-valid-path-in-a-grid			Medium
1392	longest-happy-prefix			Hard
1394	find-lucky-integer-in-an-array		📝	Easy
1395	count-number-of-teams			Medium
1396	design-underground-system		📝	Medium
1397	find-all-good-strings			Hard
1413	minimum-value-to-get-positive-step-by-step-sum			Easy
1414	find-the-minimum-number-of-fibonacci-numbers-whose-sum-is-k			Medium
1415	the-k-th-lexicographical-string-of-all-happy-strings-of-length-n			Medium
1416	restore-the-array			Hard
1403	minimum-subsequence-in-non-increasing-order			Easy
1404	number-of-steps-to-reduce-a-number-in-binary-representation-to-one			Medium
1406	stone-game-iii			Hard
1408	string-matching-in-an-array			Easy
1409	queries-on-a-permutation-with-key			Medium
1410	html-entity-parser			Medium
1411	number-of-ways-to-paint-n-3-grid			Hard
1431	kids-with-the-greatest-number-of-candies			Easy
1432	max-difference-you-can-get-from-changing-an-integer			Medium
1433	check-if-a-string-can-break-another-string			Medium
1434	number-of-ways-to-wear-different-hats-to-each-other			Hard
1417	reformat-the-string			Easy
1418	display-table-of-food-orders-in-a-restaurant			Medium
1419	minimum-number-of-frogs-croaking			Medium
1420	build-array-where-you-can-find-the-maximum-exactly-k-comparisons			Hard
1422	maximum-score-after-splitting-a-string			Easy
1423	maximum-points-you-can-obtain-from-cards			Medium
1424	diagonal-traverse-ii			Medium
1446	consecutive-characters		📝	Easy
1447	simplified-fractions			Medium
1448	count-good-nodes-in-binary-tree			Medium
1449	form-largest-integer-with-digits-that-add-up-to-target			Hard
1436	destination-city			Easy
1437	check-if-all-1s-are-at-least-length-k-places-away			Medium
1438	longest-continuous-subarray-with-absolute-diff-less-than-or-equal-to-limit			Medium
1439	find-the-kth-smallest-sum-of-a-matrix-with-sorted-rows	Cpp		Hard
1441	build-an-array-with-stack-operations			Easy
1442	count-triplets-that-can-form-two-arrays-of-equal-xor			Medium
1443	minimum-time-to-collect-all-apples-in-a-tree			Medium
1444	number-of-ways-of-cutting-a-pizza			Hard
1460	make-two-arrays-equal-by-reversing-sub-arrays			Easy
1461	check-if-a-string-contains-all-binary-codes-of-size-k		📝	Medium
1462	course-schedule-iv			Medium
1463	cherry-pickup-ii		📝	Hard
1450	number-of-students-doing-homework-at-a-given-time			Easy
1451	rearrange-words-in-a-sentence			Medium
1452	people-whose-list-of-favorite-companies-is-not-a-subset-of-another-list			Medium
1453	maximum-number-of-darts-inside-of-a-circular-dartboard			Hard
1455	check-if-a-word-occurs-as-a-prefix-of-any-word-in-a-sentence			Easy
1456	maximum-number-of-vowels-in-a-substring-of-given-length			Medium
1457	pseudo-palindromic-paths-in-a-binary-tree			Medium
1458	max-dot-product-of-two-subsequences			Hard
1475	final-prices-with-a-special-discount-in-a-shop			Easy
1478	allocate-mailboxes			Hard
1476	subrectangle-queries			Medium
1477	find-two-non-overlapping-sub-arrays-each-with-target-sum			Medium
1464	maximum-product-of-two-elements-in-an-array			Easy
1465	maximum-area-of-a-piece-of-cake-after-horizontal-and-vertical-cuts			Medium
1466	reorder-routes-to-make-all-paths-lead-to-the-city-zero			Medium
1467	probability-of-a-two-boxes-having-the-same-number-of-distinct-balls			Hard
1470	shuffle-the-array			Easy
1471	the-k-strongest-values-in-an-array			Medium
1472	design-browser-history			Medium
1473	paint-house-iii			Hard
1491	average-salary-excluding-the-minimum-and-maximum-salary			Easy
1492	the-kth-factor-of-n		📝	Medium
1493	longest-subarray-of-1s-after-deleting-one-element			Medium
1494	parallel-courses-ii	Cpp		Hard
1480	running-sum-of-1d-array			Easy
1481	least-number-of-unique-integers-after-k-removals			Medium
1482	minimum-number-of-days-to-make-m-bouquets			Medium
1469	find-all-the-lonely-nodes	🔒		Easy
1486	xor-operation-in-an-array			Easy
1487	making-file-names-unique			Medium
1488	avoid-flood-in-the-city			Medium
1489	find-critical-and-pseudo-critical-edges-in-minimum-spanning-tree			Hard
1508	range-sum-of-sorted-subarray-sums			Medium
1509	minimum-difference-between-largest-and-smallest-value-in-three-moves			Medium
1510	stone-game-iv		📝	Hard
1474	delete-n-nodes-after-m-nodes-of-a-linked-list	🔒	📝	Easy
1496	path-crossing			Easy
1497	check-if-array-pairs-are-divisible-by-k			Medium
1498	number-of-subsequences-that-satisfy-the-given-sum-condition			Medium
1499	max-value-of-equation			Hard
1485	clone-binary-tree-with-random-pointer	🔒		Medium
1502	can-make-arithmetic-progression-from-sequence			Easy
1503	last-moment-before-all-ants-fall-out-of-a-plank			Medium
1504	count-submatrices-with-all-ones			Medium
1505	minimum-possible-integer-after-at-most-k-adjacent-swaps-on-digits			Hard
1523	count-odd-numbers-in-an-interval-range			Easy
1524	number-of-sub-arrays-with-odd-sum			Medium
1525	number-of-good-ways-to-split-a-string			Medium
1526	minimum-number-of-increments-on-subarrays-to-form-a-target-array			Hard
1490	clone-n-ary-tree	🔒		Medium
1512	number-of-good-pairs			Easy
1513	number-of-substrings-with-only-1s			Medium
1531	string-compression-ii			Hard
1515	best-position-for-a-service-centre			Hard
1500	design-a-file-sharing-system	🔒		Medium
1518	water-bottles			Easy
1519	number-of-nodes-in-the-sub-tree-with-the-same-label			Medium
1520	maximum-number-of-non-overlapping-substrings			Hard
1521	find-a-value-of-a-mysterious-function-closest-to-target			Hard
1539	kth-missing-positive-number		📝	Easy
1540	can-convert-string-in-k-moves			Medium
1541	minimum-insertions-to-balance-a-parentheses-string			Medium
1546	maximum-number-of-non-overlapping-subarrays-with-sum-equals-target			Medium
1506	find-root-of-n-ary-tree	🔒	📝	Medium
1528	shuffle-string			Easy
1529	bulb-switcher-iv			Medium
1530	number-of-good-leaf-nodes-pairs			Medium
1516	move-sub-tree-of-n-ary-tree	🔒		Hard
1534	count-good-triplets			Easy
1535	find-the-winner-of-an-array-game			Medium
1536	minimum-swaps-to-arrange-a-binary-grid			Medium
1537	get-the-maximum-score			Hard
1556	thousand-separator			Easy
1557	minimum-number-of-vertices-to-reach-all-nodes			Medium
1558	minimum-numbers-of-function-calls-to-make-target-array			Medium
1559	detect-cycles-in-2d-grid			Hard
1522	diameter-of-n-ary-tree	🔒	📝	Medium
1544	make-the-string-great			Easy
1545	find-kth-bit-in-nth-binary-string			Medium
1542	find-longest-awesome-substring	Cpp		Hard
1547	minimum-cost-to-cut-a-stick	Cpp		Hard
1533	find-the-index-of-the-large-integer	🔒		Medium
1551	minimum-operations-to-make-array-equal			Medium
1552	magnetic-force-between-two-balls			Medium
1553	minimum-number-of-days-to-eat-n-oranges			Hard
1572	matrix-diagonal-sum			Easy
1573	number-of-ways-to-split-a-string			Medium
1574	shortest-subarray-to-be-removed-to-make-array-sorted			Medium
1575	count-all-possible-routes			Hard
1538	guess-the-majority-in-a-hidden-array	🔒		Medium
1560	most-visited-sector-in-a-circular-track			Easy
1561	maximum-number-of-coins-you-can-get			Medium
1562	find-latest-group-of-size-m			Medium
1563	stone-game-v			Hard
1548	the-most-similar-path-in-a-graph	🔒		Hard
1566	detect-pattern-of-length-m-repeated-k-or-more-times			Easy
1567	maximum-length-of-subarray-with-positive-product			Medium
1568	minimum-number-of-days-to-disconnect-island			Hard
1569	number-of-ways-to-reorder-array-to-get-same-bst			Hard
1588	sum-of-all-odd-length-subarrays			Easy
1590	make-sum-divisible-by-p			Medium
1589	maximum-sum-obtained-of-any-permutation			Medium
1591	strange-printer-ii			Hard
1554	strings-differ-by-one-character	🔒		Medium
1576	replace-all-s-to-avoid-consecutive-repeating-characters			Easy
1577	number-of-ways-where-square-of-number-is-equal-to-product-of-two-numbers			Medium
1578	minimum-deletion-cost-to-avoid-repeating-letters			Medium
1579	remove-max-number-of-edges-to-keep-graph-fully-traversable			Hard
1564	put-boxes-into-the-warehouse-i	🔒		Medium
1582	special-positions-in-a-binary-matrix			Easy
1583	count-unhappy-friends			Medium
1584	min-cost-to-connect-all-points			Medium
1585	check-if-string-is-transformable-with-substring-sort-operations			Hard
1603	design-parking-system			Easy
1604	alert-using-same-key-card-three-or-more-times-in-a-one-hour-period			Medium
1606	find-servers-that-handled-most-number-of-requests			Hard
1605	find-valid-matrix-given-row-and-column-sums			Medium
1570	dot-product-of-two-sparse-vectors	🔒		Medium
1592	rearrange-spaces-between-words			Easy
1593	split-a-string-into-the-max-number-of-unique-substrings			Medium
1594	maximum-non-negative-product-in-a-matrix			Medium
1595	minimum-cost-to-connect-two-groups-of-points			Hard
1580	put-boxes-into-the-warehouse-ii	🔒		Medium
1598	crawler-log-folder			Easy
1599	maximum-profit-of-operating-a-centennial-wheel			Medium
1600	throne-inheritance			Medium
1601	maximum-number-of-achievable-transfer-requests			Hard
1621	number-of-sets-of-k-non-overlapping-line-segments			Medium
1620	coordinate-with-maximum-network-quality			Medium
1622	fancy-sequence			Hard
1586	binary-search-tree-iterator-ii	🔒	📝	Medium
1608	special-array-with-x-elements-greater-than-or-equal-x			Easy
1609	even-odd-tree			Medium
1611	minimum-one-bit-operations-to-make-integers-zero			Hard
1610	maximum-number-of-visible-points			Hard
1597	build-binary-expression-tree-from-infix-expression	🔒		Hard
1614	maximum-nesting-depth-of-the-parentheses			Easy
1615	maximal-network-rank			Medium
1616	split-two-strings-to-make-palindrome			Medium
1617	count-subtrees-with-max-distance-between-cities			Hard
1636	sort-array-by-increasing-frequency			Easy
1637	widest-vertical-area-between-two-points-containing-no-points			Medium
1638	count-substrings-that-differ-by-one-character			Medium
1639	number-of-ways-to-form-a-target-string-given-a-dictionary			Hard
1602	find-nearest-right-node-in-binary-tree	🔒	📝	Medium
1624	largest-substring-between-two-equal-characters			Easy
1625	lexicographically-smallest-string-after-applying-operations			Medium
1626	best-team-with-no-conflicts			Medium
1612	check-if-two-expression-trees-are-equivalent	🔒		Medium
1629	slowest-key			Easy
1630	arithmetic-subarrays			Medium
1631	path-with-minimum-effort		📝	Medium
1652	defuse-the-bomb			Easy
1653	minimum-deletions-to-make-string-balanced			Medium
1654	minimum-jumps-to-reach-home			Medium
1655	distribute-repeating-integers			Hard
1640	check-array-formation-through-concatenation		📝	Easy
1641	count-sorted-vowel-strings		📝	Medium
1642	furthest-building-you-can-reach			Medium
1628	design-an-expression-tree-with-evaluate-function	🔒		Medium
1646	get-maximum-in-generated-array		📝	Easy
1647	minimum-deletions-to-make-character-frequencies-unique			Medium
1648	sell-diminishing-valued-colored-balls			Medium
1649	create-sorted-array-through-instructions		📝	Hard
1634	add-two-polynomials-represented-as-linked-lists	🔒		Medium
1656	design-an-ordered-stream			Easy
1658	minimum-operations-to-reduce-x-to-zero		📝	Medium
1657	determine-if-two-strings-are-close		📝	Medium
1659	maximize-grid-happiness			Hard
1644	lowest-common-ancestor-of-a-binary-tree-ii	🔒		Medium
1662	check-if-two-string-arrays-are-equivalent		📝	Easy
1663	smallest-string-with-a-given-numeric-value		📝	Medium
1664	ways-to-make-a-fair-array			Medium
1665	minimum-initial-energy-to-finish-tasks			Hard
1650	lowest-common-ancestor-of-a-binary-tree-iii	🔒		Medium
1660	correct-a-binary-tree	🔒		Medium
1666	change-the-root-of-a-binary-tree	🔒		Medium