LeetCode

数据结构和算法

位运算

题号	标题	难度	代码	提示
136	Single Number	Medium	解1 解2
137	Single Number II	Medium	解1
190	Reverse Bits	Easy	解1 解2
191	Number of 1 Bits	Easy	解1 解2
201	Bitwise AND of Numbers Range	Medium	解1
231	Power of Two	Easy	解1
260	Single Number III	Medium	解1 解2
268	Missing Number	Medium	解1 解2
318	Maximum Product of Word Lengths	Medium	解1 解2
342	Power of Four	Easy	解1
371	Sum of Two Integers	Easy	解1

数组

题号	标题	难度	代码	提示
15	3 Sum	Medium	解1
16	3 Sum Closest	Medium	解1 解2
18	4 Sum	Medium	解1 解2
26	Remove Duplicates from Sorted Array	Easy	解1 解2
27	Remove Element	Easy	解1
31	Next Permutation	Medium	解1
48	Rotate Image	Medium	解1
54	Spiral Matrix	Medium	解1
59	Spiral Matrix II	Medium	解1
66	Plus One	Easy	解1
73	Set Matrix Zeroes	Medium	解1
80	Remove Duplicates from Sorted Array II	Medium	解1
118	Pascal's Triangle	Easy	解1
119	Pascal's Triangle II	Easy	解1
121	Best Time to Buy and Sell Stock	Medium	解1
169	Majority Element	Easy	解1
189	Rotate Array	Easy	解1
209	Minimum Size Subarray Sum	Medium	解1
215	Kth Largest Element in an Array	Medium	解1 解2
228	Summary Ranges	Easy	解1
229	Majority Element II	Medium	解1
238	Product of Array Except Self	Medium	解1 解2
240	Search a 2D Matrix II	Medium	解1 解2
334	Increasing Triplet Subsequence	Medium	解1 解2 解3

字符串

题号	标题	难度	代码	提示
6	ZigZag Conversion	Easy	解1 解2
8	String to Integer (atoi)	Easy	解1
14	Longest Common Prefix	Easy	解1
28	Implement strStr()	Easy	解1 解2
38	Count and Say	Easy	解1
43	Multiply Strings	Medium	解1 解2
58	Length of Last Word	Easy	解1
67	Add Binary	Easy	解1
125	Valid Palindrome	Easy	解1
151	Reverse Words in a String	Medium	解1
165	Compare Version Numbers	Easy	解1
242	Valid Anagram	Easy	解1
273	Integer to English Words	Medium	解1
306	Addictive Number	Medium	解1
383	Ransom Note	Easy	解1

链表

题号	标题	难度	代码	提示
2	Add Two Numbers	Medium	解1
21	Merge Two Sorted Lists	Easy	解1
24	Swap Nodes in Pairs	Medium	解1
61	Rotate List	Medium	解1
82	Remove Duplicates from Sorted List II	Medium	解1
83	Remove Duplicates from Sorted List	Easy	解1
92	Reverse Linked List II	Medium	解1
146	LRU Cache	Hard	解1
160	Intersection of Two Linked Lists	Easy	解1
203	Remove Linked List Elements	Easy	解1
206	Reverse Linked List	Easy	解1
234	Palindrome Linked List	Easy	解1
237	Delete Node in a Linked List	Easy	解1
328	Odd Even Linked List	Easy	解1

栈

题号	标题	难度	代码	提示
20	Valid Parentheses	Easy	解1
71	Simplify Path	Medium	解1
101	Symmetric Tree	Easy	解1
150	Evaluate Reverse Polish Notation	Medium	解1
155	Min Stack	Easy	解1 解2
173	Binary Search Tree Iterator	Medium	解1
224	Basic Calculator	Medium	解1
227	Basic Calculator II	Medium	解1
232	Implement Queue using Stacks	Easy	解1
331	Verify Preorder Serialization of a Binary Tree	Medium	解1
385	Mini Parser	Medium	解1

队列

题号	标题	难度	代码	提示
225	Implement Stack using Queues	Medium	解1

堆

题号	标题	难度	代码	提示
264	Ugly Number II	Medium	解1
313	Super Ugly Number	Medium	解1
373	Find K Pairs with Smallest Sums	Medium	解1
378	Kth Smallest Element in a Sorted Matrix	Medium	解1

树

题号	标题	难度	代码	提示
94	Binary Tree Inorder Traversal	Medium	解1 解2
144	Binary Tree Preorder Traversal	Medium	解1 解1
208	Implement Trie (Prefix Tree)	Medium	解1
211	Add and Search Word - Data structure design	Medium	解1
226	Invert Binary Tree	Easy	解1
297	Serialize and Deserialize Binary Tree	Medium	解1
307	Range Sum Query - Mutable	Medium	解1

哈稀

题号	标题	难度	代码	提示
1	Two Sum	Medium	解1 解2
3	Longest Substring Without Repeating Characters	Medium	解1
36	Valid Sudoku	Easy	解1
49	Group Anagrams	Medium	解1
187	Repeated DNA Sequences	Medium	解1
202	Happy Number	Easy	解1
204	Count Primes	Easy	解1
205	Isomorphic Strings	Easy	解1
217	[Contains Duplicate](Contains Duplicate)	Easy	解1
219	Contains Duplicate II	Easy	解1
290	Word Pattern	Easy	解1
299	Bulls and Cow	Easy	解1

递归

题号	标题	难度	代码	提示
75	Sort Colors	Medium	解1
88	Merge Sorted Array	Easy	解1
147	Insertion Sort List	Medium	解1
148	Sort List	Medium	解1
179	Largest Number	Medium	解1
274	H-Index	Medium	解1
324	Wiggle Sort II	Medium	解1
347	Top K Frequent Elements	Medium	解1

迭代

题号	标题	难度	代码	提示
95	Unique Binary Search Trees II	Medium	解1
98	Validate Binary Search Tree	Medium	解1
100	Same Tree	Easy	解1
104	Maximum Depth of Binary Tree	Easy	解1
105	Construct Binary Tree from Preorder and Inorder Traversal	Medium	解1
106	Construct Binary Tree from Inorder and Postorder Traversal	Medium	解1
108	Convert Sorted Array to Binary Search Tree	Medium	解1
109	Convert Sorted List to Binary Search Tree	Medium	解1
110	Balanced Binary Tree	Easy	解1
111	Minimum Depth of Binary Tree	Easy	解1
114	Flatten Binary Tree to Linked List	Medium	解1
116	Populating Next Right Pointers in Each Node	Medium	解1
129	Sum Root to Leaf Numbers	Medium	解1
241	Different Ways to Add Parentheses	Medium	解1
337	House Robber III	Medium	解1

双指针

题号	标题	难度	代码	提示
19	Remove Nth Node From End of List	Easy	解1
86	Partition List	Medium	解1
141	Linked List Cycle	Medium	解1
142	Linked List Cycle II	Medium	解1
143	Reorder List	Medium	解1
283	Move Zeroes	Easy	解1 解2
344	Reverse String	Easy	解1
345	Reverse Vowels of a String	Easy	解1
349	Intersection of Two Arrays	Easy	解1 解1
350	Intersection of Two Arrays II	Easy	解1

二分查找

题号	标题	难度	代码	提示
33	Search in Rotated Sorted Array	Hard	解1
34	Search for a Range	Medium	解1
35	Search Insert Position	Medium	解1
69	Sqrt(x)	Medium	解1
74	Search a 2D Matrix	Medium	解1
81	Search in Rotated Sorted Array II	Medium	解1
153	Find Minimum in Rotated Sorted Array	Medium	解1
162	Find Peak Element	Medium	解1
222	Count Complete Tree Nodes	Medium	解1
275	H-Index II	Medium	解1
278	First Bad Version	Easy	解1
300	Longest Increasing Subsequence	Medium	解1
367	Valid Perfect Square	Medium	解1
374	Guess Number Higher or Lower	Easy	解1

二分树

题号	标题	难度	代码	提示
220	Contains Duplicate III	Medium	解1
230	Kth Smallest Element in a BST	Medium	解1 解2
235	Lowest Common Ancestor of a Binary Search Tree	Easy	解1

动态规划

题号	标题	难度	代码	提示
53	Maximum Subarray	Medium	解1
62	Unique Paths	Medium	解1
63	Unique Paths II	Medium	解1
64	Minimum Path Sum	Medium	解1
70	Climbing Stairs	Easy	解1
91	Decode Ways	Medium	解1
96	Unique Binary Search Trees	Medium	解1
120	Triangle	Medium	解1
139	Word Break	Medium	解1
152	Maximum Product Subarray	Medium	解1
198	House Robber	Easy	解1
213	House Robber II	Medium	解1
221	Maximal Square	Medium	解1
279	Perfect Squares	Medium	解1
303	Range Sum Query - Immutable	Easy	解1 解1
304	Range Sum Query 2D - Immutable	Medium	解1
309	Best Time to Buy and Sell Stock with Cooldown	Medium	解1
322	Coin Change	Medium	解1
357	Count Numbers with Unique Digits	Medium	解1
368	Largest Divisible Subset	Medium	解1
375	Guess Number Higher or Lower II	Medium	解1
377	Combination Sum IV	Medium	解1

贪心

题号	标题	难度	代码	提示
11	Container With Most Water	Medium	解1
55	Jump Game	Medium	解1
122	Best Time to Buy and Sell Stock II	Medium	解1
134	Gas Station	Medium	解1
316	Remove Duplicate Letters	Medium	解1
376	Wiggle Subsequence	Medium	解1 解2
392	Is Subsequence	Medium	解1
397	Integer Replacement	Easy	解1 解2
402	Remove K Digits	Medium	解1

分支限界

题号	标题	难度	代码	提示
102	Binary Tree Level Order Traversal	Easy	解1
107	Binary Tree Level Order Traversal II	Easy	解1
103	Binary Tree Zigzag Level Order Traversal	Medium	解1
127	Word Ladder	Medium	解1
130	Surrounded Regions	Medium	解1
207	Course Schedule	Medium	解1
210	Course Schedule II	Medium	解1
112	Path Sum	Easy	解1
113	Path Sum II	Medium	解1
199	Binary Tree Right Side View	Medium	解1
200	Number of Islands	Medium	解1
236	Lowest Common Ancestor of a Binary Tree	Medium	解1
257	Binary Tree Paths	Medium	解1
332	Reconstruct Itinerary	Medium	解1
399	Evaluate Division	Medium	解1

Thanks kamyu104