📓 LeetCode

LeetCode Problems' Solutions

#	Title	Solution	Difficulty
1314	Matrix Block Sum	C++	Medium
1277	Count Square Submatrices with All Ones	C++	Medium
1255	Maximum Score Words Formed by Letters	C++	Hard
1179	Reformat Department Table	MySQL	Easy
1161	Maximum Level Sum of a Binary Tree	C++	Medium
1046	Last Stone Weight	C++	Easy
1043	Partition Array for Maximum Sum	C++	Medium
1039	Minimum Score Triangulation of Polygon	C++	Medium
1025	Divisor Game	C++	Easy
961	N-Repeated Element in Size 2N Array	C++	Easy
938	Range Sum of BST	C++	Easy
922	Sort Array By Parity II	C++	Easy
905	Sort Array By Parity	C++	Easy
841	Keys and Rooms	C++	Medium
771	Jewels and Stones	C++	Easy
739	Daily Temperatures	C++	Medium
701	Insert into a Binary Search Tree	C++	Medium
654	Maximum Binary Tree	C++	Medium
647	Palindromic Substrings	C++	Medium
627	Swap Salary	MySQL	Easy
626	Exchange Seats	MySQL	Medium
620	Not Boring Movies	MySQL	Easy
617	Merge Two Binary Trees	C++	Easy
612	Task Scheduler	C++	Medium
601	Human Traffic of Stadium	MySQL	Hard
596	Classes More Than 5 Students	MySQL	Easy
595	Big Countries	MySQL	Easy
560	Subarray Sum Equals K	C++	Medium
543	Diameter of Binary Tree	C++	Easy
494	Target Sum	C++	Medium
486	Predict the Winner	C++	Medium
476	Number Complement	C++	Easy
461	Hamming Distance	C++	Easy
454	4Sum II	C++	Medium
448	Find All Numbers Disappeared in an Array	C++	Easy
437	Path Sum III	C++	Easy
416	Partition Equal Subset Sum	C++	Medium
415	Add Strings	C++	Easy
412	Fizz Buzz	C++	Easy
406	Queue Reconstruction by Height	C++	Medium
395	Longest Substring with At Least K Repeating Characters	C++	Medium
394	Decode String	C++	Medium
387	First Unique Character in a String	C++	Easy
384	Shuffle an Array	C++	Medium
378	Kth Smallest Element in a Sorted Matrix	C++	Medium
371	Sum of Two Integers	C++	Easy
350	Intersection of Two Arrays II	C++	Easy
347	Top K Frequent Elements	C++	Medium
344	Reverse String	C++	Easy
341	Flatten Nested List Iterator	C++	Medium
338	Counting Bits	C++	Medium
337	House Robber III	C++	Medium
328	Odd Even Linked List	C++	Medium
312	Burst Balloons	C++	Hard
309	Best Time to Buy and Sell Stock with Cooldown	C++	Medium
297	Serialize and Deserialize Binary Tree	C++	Hard
289	Game of Life	C++	Medium
287	Find the Duplicate Number	C++	Medium
283	Move Zeroes	C++	Easy
279	Perfect Squares	C++	Medium
268	Missing Number	C++	Easy
262	Trips and Users	MySQL	Hard
242	Valid Anagram	C++	Easy
240	Search a 2D Matrix II	C++	Medium
238	Product of Array Except Self	C++	Medium
237	Delete Node in a Linked List	C++	Easy
232	Implement Queue using Stacks	C++	Easy
230	Kth Smallest Element in a BST	C++	Medium
226	Invert Binary Tree	C++	Easy
225	Implement Stack using Queues	C++	Easy
217	Contains Duplicate	C++	Easy
215	Kth Largest Element in an Array	C++	Medium
208	Implement Trie (Prefix Tree)	C++	Medium
206	Reverse Linked List	C++	Easy
202	Happy Number	C++	Easy
200	Number of Islands	C++	Medium
197	Rising Temperature	MySQL	Easy
196	Delete Duplicate Emails	MySQL	Easy
191	Number of 1 Bits	C++	Easy
185	Department Top Three Salaries	MySQL	Hard
184	Department Highest Salary	MySQL	Medium
183	Customers Who Never Order	MySQL	Easy
182	Duplicate Emails	MySQL	Easy
181	Employees Earning More Than Their Managers	MySQL	Easy
180	Consecutive Numbers	MySQL	Medium
178	Rank Scores	MySQL	Medium
177	Nth Highest Salary	MySQL	Medium
176	Second Highest Salary	MySQL	Easy
175	Combine Two Tables	MySQL	Easy
171	Excel Sheet Column Number	C++	Easy
169	Majority Element	C++	Easy
136	Single Number	C++	Easy
128	Longest Consecutive Sequence	C++	Hard
122	Best Time to Buy and Sell Stock II	C++	Easy
121	Best Time to Buy and Sell Stock	C++	Easy
118	Pascal's Triangle	C++	Easy
114	Flatten Binary Tree to Linked List	C++	Medium
108	Convert Sorted Array to Binary Search Tree	C++	Easy
105	Construct Binary Tree from Preorder and Inorder Traversal	C++	Medium
104	Maximum Depth of Binary Tree	C++	Easy
102	Binary Tree Level Order Traversal	C++	Medium
101	Symmetric Tree	C++	Easy
96	Unique Binary Search Trees	C++	Medium
94	Binary Tree Inorder Traversal	C++	Medium
78	Subsets	C++	Medium
75	Sort Colors	C++	Medium
70	Climbing Stairs	C++	Easy
64	Minimum Path Sum	C++	Medium
62	Unique Paths	C++	Medium
57	Insert Interval	C++	Hard
56	Merge Intervals	C++	Medium
53	Maximum Subarray	C++	Easy
49	Group Anagrams	C++	Medium
48	Rotate Image	C++	Medium
46	Permutations	C++	Medium
42	Trapping Rain Water	C++	Hard
39	Combination Sum	C++	Medium
36	Valid Sudoku	C++	Medium
22	Generate Parentheses	C++	Medium
21	Merge Two Sorted Lists	C++	Easy
17	Letter Combinations of a Phone Number	C++	Medium
13	Roman to Integer	C++	Easy
11	Container With Most Water	C++	Medium
10	Regular Expression Matching	C++	Hard
9	Palindrome Number	C++	Easy
8	String to Integer (atoi)	C++	Medium
7	Reverse Integer	C++	Easy
6	ZigZag Conversion	C++	Medium
5	Longest Palindromic Substring	C++	Medium
4	Median of Two Sorted Arrays	C++	Hard
3	Longest Substring Without Repeating Characters	C++	Medium
2	Add Two Numbers	C++	Medium
1	Two Sum	C++	Easy