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luruozhou/leetcode

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LeetCode

This is my exercise for leetcode. (progress 131/210)

Algorithm

# Title Solution Difficulty
1 Two Sum C++ Medium
2 Add Two Numbers C++ Medium
3 Longest Substring Without Repeating Characters C++ Medium
4 Median of Two Sorted Arrays C++ Hard
5 Longest Palindromic Substring C++ Medium
6 ZigZag Conversion C++ Easy
7 Reverse Integer C++ Easy
8 String to Integer (atoi) C++ Easy
9 Palindrome Number C++ Easy
10 Regular Expression Matching C++ Hard
11 Container With Most Water C++ Medium
12 Integer to Roman C++ Medium
13 Roman to Integer C++ Medium
14 Longest Common Prefix C++ Easy
15 3Sum C++ Medium
16 3Sum Closest C++ Medium
17 Letter Combinations of a Phone Number C++ Medium
18 4Sum C++ Medium
19 Remove Nth Node From End of List C++ Easy
20 Valid Parentheses C++ Easy
21 Merge Two Sorted Lists C++ Easy
22 Generate Parentheses C++ Medium
23 Merge k Sorted Lists C++ Hard
24 Swap Nodes in Pairs C++ Medium
25 Reverse Nodes in k-Group C++ Hard
26 Remove Duplicates from Sorted Array C++ Easy
27 Remove Element C++ Easy
28 Implement strStr() C++ Easy
29 Divide Two Integers C++ Medium
30 Substring with Concatenation of All Words C++ Hard
31 Next Permutation C++ Medium
32 Longest Valid Parentheses C++ Hard
33 Search in Rotated Sorted Array C++ Hard
34 Search for a Range C++ Medium
35 Search Insert Position C++ Medium
36 Valid Sudoku C++ Easy
37 Sudoku Solver C++ Hard
38 Count and Say C++ Easy
39 Combination Sum C++ Medium
40 Combination Sum II C++ Medium
41 First Missing Positive C++ Hard
42 Trapping Rain Water C++ Hard
43 Multiply Strings C++ Medium
44 Wildcard Matching C++ Hard
45 Jump Game II C++ Hard
46 Permutations C++ Medium
47 Permutations II C++ Hard
48 Rotate Image C++ Medium
49 Anagrams C++ Medium
50 Pow(x, n) C++ Medium
51 N-Queens C++ Hard
52 N-Queens II C++ Hard
53 Maximum Subarray C++ Medium
54 Spiral Matrix C++ Medium
55 Jump Game C++ Medium
56 Merge Intervals C++ Hard
57 Insert Interval C++ Hard
58 Length of Last Word C++ Easy
59 Spiral Matrix II C++ Medium
60 Permutation Sequence C++ Medium
61 Rotate List C++ Medium
62 Unique Paths C++ Medium
63 Unique Paths II C++ Medium
64 Minimum Path Sum C++ Medium
65 Valid Number C++ Hard
66 Plus One C++ Easy
67 Add Binary C++ Easy
68 Text Justification C++ Hard
69 Sqrt(x) C++ Medium
70 Climbing Stairs C++ Easy
71 Simplify Path C++ Medium
72 Edit Distance C++ Hard
73 Set Matrix Zeroes C++ Medium
74 Search a 2D Matrix C++ Medium
75 Sort Colors C++ Medium
76 Minimum Window Substring C++ Hard
77 Combinations C++ Medium
78 Subsets C++ Medium
79 Word Search C++ Medium
80 Remove Duplicates from Sorted Array II C++ Medium
81 Search in Rotated Sorted Array II C++ Medium
82 Remove Duplicates from Sorted List II C++ Medium
83 Remove Duplicates from Sorted List C++ Easy
84 Largest Rectangle in Histogram C++ Hard
85 Maximal Rectangle C++ Hard
86 Partition List C++ Medium
87 Scramble String C++ Hard
88 Merge Sorted Array C++ Easy
89 Gray Code C++ Medium
90 Subsets II C++ Medium
91 Decode Ways C++ Hard
92 Reverse Linked List II C++ Medium
93 Restore IP Addresses C++ Medium
94 Binary Tree Inorder Traversal C++ Medium
95 Unique Binary Search Trees II C++ Medium
96 Unique Binary Search Trees C++ Medium
97 Interleaving String C++ Medium
98 Validate Binary Search Tree C++ Medium
99 Recover Binary Search Tree C++ Hard
100 Same Tree C++ Easy
101 Symmetric Tree C++ Easy
102 Binary Tree Level Order Traversal C++ Easy
103 Binary Tree Zigzag Level Order Traversal C++ Medium
104 Maximum Depth of Binary Tree C++ Easy
105 Construct Binary Tree from Preorder and Inorder Traversal C++ Medium
106 Construct Binary Tree from Inorder and Postorder Traversal C++ Medium
107 Binary Tree Level Order Traversal II C++ Easy
108 Convert Sorted Array to Binary Search Tree C++ Medium
109 Convert Sorted List to Binary Search Tree C++ Medium
110 Balanced Binary Tree C++ Easy
111 Minimum Depth of Binary Tree C++ Easy
112 Path Sum C++ Easy
113 Path Sum II C++ Medium
114 Flatten Binary Tree to Linked List C++ Medium
115 Distinct Subsequences C++ Hard
116 Populating Next Right Pointers in Each Node C++ Medium
117 Populating Next Right Pointers in Each Node II C++ Hard
118 Pascal's Triangle C++ Easy
119 Pascal's Triangle II C++ Easy
120 Triangle C++ Medium
121 Best Time to Buy and Sell Stock C++ Medium
122 Best Time to Buy and Sell Stock II C++ Medium
123 Best Time to Buy and Sell Stock III C++ Hard
124 Binary Tree Maximum Path Sum C++ Hard
125 Valid Palindrome C++ Easy
139 Word Break C++ Medium
144 Binary Tree Preorder Traversal C++ Medium
145 Binary Tree Postorder Traversal C++ Hard
171 Excel Sheet Column Number C++ Easy
191 Number of 1 Bits C++ Easy
226 Invert Binary Tree C++ Easy

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