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- 注册时间
- 2011-4-8
- 最后登录
- 1970-1-1
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#
Title
Acceptance
Difficulty
Frequency
121 Best Time to Buy and Sell Stock 40.4% Easy
445 Add Two Numbers II 46.1% Medium
138 Copy List with Random Pointer 26.5% Medium
283 Move Zeroes 49.1% Easy
1 Two Sum 32.8% Easy
387 First Unique Character in a String 46.4% Easy
155 Min Stack 27.7% Easy
117 Populating Next Right Pointers in Each Node II 33.6% Medium
62 Unique Paths 40.3% Medium
42 Trapping Rain Water 36.1% Hard
146 LRU Cache 17.0% Hard
206 Reverse Linked List 44.7% Easy
160 Intersection of Two Linked Lists 30.3% Easy
122 Best Time to Buy and Sell Stock II 46.4% Easy
53 Maximum Subarray 39.3% Easy
232 Implement Queue using Stacks 36.0% Easy
69 Sqrt(x) 27.5% Easy
50 Pow(x, n) 26.6% Medium
56 Merge Intervals 29.3% Medium
386 Lexicographical Numbers 40.6% Medium
20 Valid Parentheses 33.0% Easy
287 Find the Duplicate Number 42.7% Medium
2 Add Two Numbers 27.2% Medium
268 Missing Number 44.0% Easy
7 Reverse Integer 24.1% Easy
98 Validate Binary Search Tree 22.9% Medium
151 Reverse Words in a String 15.7% Medium
215 Kth Largest Element in an Array 38.5% Medium
88 Merge Sorted Array 31.8% Easy
49 Group Anagrams 33.4% Medium
102 Binary Tree Level Order Traversal 38.5% Medium
225 Implement Stack using Queues 32.2% Easy
3 Longest Substring Without Repeating Characters 24.1% Medium
103 Binary Tree Zigzag Level Order Traversal 33.6% Medium
26 Remove Duplicates from Sorted Array 35.5% Easy
105 Construct Binary Tree from Preorder and Inorder Traversal 31.6% Medium
79 Word Search 26.1% Medium
141 Linked List Cycle 35.5% Easy
5 Longest Palindromic Substring 25.1% Medium
8 String to Integer (atoi) 13.9% Medium
63 Unique Paths II 31.4% Medium
13 Roman to Integer 44.9% Easy
100 Same Tree 46.0% Easy
139 Word Break 29.2% Medium
189 Rotate Array 24.1% Easy
15 3Sum 21.5% Medium
101 Symmetric Tree 38.0% Easy
172 Factorial Trailing Zeroes 35.6% Easy
33 Search in Rotated Sorted Array 32.1% Medium
131 Palindrome Partitioning 32.2% Medium
24 Swap Nodes in Pairs 37.8% Medium
230 Kth Smallest Element in a BST 43.1% Medium
16 3Sum Closest 30.8% Medium
158 Read N Characters Given Read4 II - Call multiple times 24.2% Hard
274 H-Index 32.7% Medium
11 Container With Most Water 36.3% Medium
113 Path Sum II 32.7% Medium
556 Next Greater Element III 27.3% Medium
208 Implement Trie (Prefix Tree) 27.1% Medium
266 Palindrome Permutation 56.3% Easy
297 Serialize and Deserialize Binary Tree 32.7% Hard
110 Balanced Binary Tree 36.9% Easy
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