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265 Commits
001. Single Number
001. Single Number
 
 
002. Maximum Depth of Binary Tree
002. Maximum Depth of Binary Tree
 
 
003. Same Tree
003. Same Tree
 
 
004. Reverse Integer
004. Reverse Integer
 
 
005. Best Time to Buy and Sell Stock II
005. Best Time to Buy and Sell Stock II
 
 
006. Unique Binary Search Trees
006. Unique Binary Search Trees
 
 
007. Linked List Cycle
007. Linked List Cycle
 
 
008. Binary Tree Inorder Traversal
008. Binary Tree Inorder Traversal
 
 
009. Binary Tree Preorder Traversal
009. Binary Tree Preorder Traversal
 
 
010. Populating Next Right Pointers in Each Node
010. Populating Next Right Pointers in Each Node
 
 
011. Search Insert Position
011. Search Insert Position
 
 
012. Remove Duplicates from Sorted List
012. Remove Duplicates from Sorted List
 
 
013. Climbing Stairs
013. Climbing Stairs
 
 
014. Maximum Subarray
014. Maximum Subarray
 
 
015. N-Queens II
015. N-Queens II
 
 
016. Roman to Integer
016. Roman to Integer
 
 
017. Integer to Roman
017. Integer to Roman
 
 
018. Single Number II
018. Single Number II
 
 
019. Merge Two Sorted Lists
019. Merge Two Sorted Lists
 
 
020. Remove Element
020. Remove Element
 
 
021. Convert Sorted Array to Binary Search Tree
021. Convert Sorted Array to Binary Search Tree
 
 
022. Balanced Binary Tree
022. Balanced Binary Tree
 
 
023. Swap Nodes in Pairs
023. Swap Nodes in Pairs
 
 
024. Remove Duplicates from Sorted Array
024. Remove Duplicates from Sorted Array
 
 
025. Sort Colors
025. Sort Colors
 
 
026. Merge Sorted Array
026. Merge Sorted Array
 
 
027. Symmetric Tree
027. Symmetric Tree
 
 
028. Gray Code
028. Gray Code
 
 
029. Unique Paths
029. Unique Paths
 
 
030. Plus One
030. Plus One
 
 
031. Generate Parentheses
031. Generate Parentheses
 
 
032. Pascal's Triangle
032. Pascal's Triangle
 
 
033. Container With Most Water
033. Container With Most Water
 
 
034. Permutations
034. Permutations
 
 
035. Rotate Image
035. Rotate Image
 
 
036. Search a 2D Matrix
036. Search a 2D Matrix
 
 
037. Find Minimum in Rotated Sorted Array
037. Find Minimum in Rotated Sorted Array
 
 
038. Minimum Path Sum
038. Minimum Path Sum
 
 
039. Best Time to Buy and Sell Stock
039. Best Time to Buy and Sell Stock
 
 
040. Binary Tree Level Order Traversal II
040. Binary Tree Level Order Traversal II
 
 
041. Search in Rotated Sorted Array II
041. Search in Rotated Sorted Array II
 
 
042. Binary Tree Postorder Traversal
042. Binary Tree Postorder Traversal
 
 
043. Linked List Cycle II
043. Linked List Cycle II
 
 
044. Set Matrix Zeroes
044. Set Matrix Zeroes
 
 
045. Spiral Matrix II
045. Spiral Matrix II
 
 
046. Remove Duplicates from Sorted Array II
046. Remove Duplicates from Sorted Array II
 
 
047. Populating Next Right Pointers in Each Node II
047. Populating Next Right Pointers in Each Node II
 
 
048. Binary Tree Level Order Traversal
048. Binary Tree Level Order Traversal
 
 
049. Path Sum
049. Path Sum
 
 
050. Pascal's Triangle II
050. Pascal's Triangle II
 
 
051. Combinations
051. Combinations
 
 
052. Sum Root to Leaf Numbers
052. Sum Root to Leaf Numbers
 
 
053. Remove Nth Node from End of List
053. Remove Nth Node from End of List
 
 
054. Minimum Depth of Binary Tree
054. Minimum Depth of Binary Tree
 
 
055. Length of Last Word
055. Length of Last Word
 
 
056. Trapping Rain Water
056. Trapping Rain Water
 
 
057. Palindrome Number
057. Palindrome Number
 
 
058. Search in Rotated Sorted Array
058. Search in Rotated Sorted Array
 
 
059. Valid Parentheses
059. Valid Parentheses
 
 
060. Flatten Binary Tree to Linked List
060. Flatten Binary Tree to Linked List
 
 
061. Longest Consecutive Sequence
061. Longest Consecutive Sequence
 
 
062. Unique Paths II
062. Unique Paths II
 
 
063. Subsets
063. Subsets
 
 
064. Valid Sudoku
064. Valid Sudoku
 
 
065. Unique Binary Search Trees II
065. Unique Binary Search Trees II
 
 
066. Convert Sorted List to Binary Search Tree
066. Convert Sorted List to Binary Search Tree
 
 
067. Search for a Range
067. Search for a Range
 
 
068. Jump Game
068. Jump Game
 
 
069. Count and Say
069. Count and Say
 
 
070. Longest Common Prefix
070. Longest Common Prefix
 
 
071. Subsets II
071. Subsets II
 
 
072. Partition List
072. Partition List
 
 
073. 3Sum Closest
073. 3Sum Closest
 
 
074. Path Sum II
074. Path Sum II
 
 
075. Combination Sum
075. Combination Sum
 
 
076. Triangle
076. Triangle
 
 
077. Construct Binary Tree from Inorder and Postorder Traversal
077. Construct Binary Tree from Inorder and Postorder Traversal
 
 
078. Binary Tree Zigzag Level Order Traversal
078. Binary Tree Zigzag Level Order Traversal
 
 
079. Construct Binary Tree from Preorder and Inorder Traversal
079. Construct Binary Tree from Preorder and Inorder Traversal
 
 
080. Letter Combinations of a Phone Number
080. Letter Combinations of a Phone Number
 
 
081. Reverse Linked List II
081. Reverse Linked List II
 
 
082. Pow(x, n)
082. Pow(x, n)
 
 
083. N-Queens
083. N-Queens
 
 
084. Gas Station
084. Gas Station
 
 
085. Palindrome Partitioning
085. Palindrome Partitioning
 
 
086. Validate Binary Search Tree
086. Validate Binary Search Tree
 
 
087. Add Binary
087. Add Binary
 
 
088. Edit Distance
088. Edit Distance
 
 
089. Next Permutation
089. Next Permutation
 
 
090. Insertion Sort List
090. Insertion Sort List
 
 
091. Reverse Nodes in k-Group
091. Reverse Nodes in k-Group
 
 
092. Distinct Subsequences
092. Distinct Subsequences
 
 
093. Permutations II
093. Permutations II
 
 
094. Remove Duplicates from Sorted List II
094. Remove Duplicates from Sorted List II
 
 
095. Jump Game II
095. Jump Game II
 
 
096. Combination Sum II
096. Combination Sum II
 
 
097. Anagrams
097. Anagrams
 
 
098. Recover Binary Search Tree
098. Recover Binary Search Tree
 
 
099. ZigZag Conversion
099. ZigZag Conversion
 
 
100. Copy List with Random Pointer
100. Copy List with Random Pointer
 
 

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LeetCode

LeetCode solutions in C++ 11 and Python.

NO. Title Solution Add Date Difficulty
1 Single Number C++|Python 2014/10/15 Medium
2 Maximum Depth of Binary Tree C++|Python 2014/10/16 Easy
3 Same Tree C++|Python 2014/10/17 Easy
4 Reverse Integer C++ 2014/10/18 Easy
5 Best Time to Buy and Sell Stock II C++ 2014/10/19 Medium
6 Unique Binary Search Trees C++ 2014/10/20 Medium
7 Linked List Cycle C++ 10/21/2014 Medium
8 Binary Tree Inorder Traversal C++ 10/22/2014 Medium
9 Binary Tree Preorder Traversal C++ 10/23/2014 Medium
10 Populating Next Right Pointers in Each Node C++ 10/24/2014 Medium
11 Search Insert Position C++ 10/25/2014 Medium
12 Remove Duplicates from Sorted List C++ 10/26/2014 Easy
13 Climbing Stairs C++ 10/27/2014 Easy
14 Maximum Subarray C++ 10/28/2014 Medium
15 N-Queens II C++ 10/29/2014 Hard
16 Roman to Integer C++ 10/30/2014 Easy
17 Integer to Roman C++ 10/31/2014 Medium
18 Single Number II C++ 11/1/2014 Medium
19 Merge Two Sorted Lists C++ 11/2/2014 Easy
20 Remove Element C++ 11/3/2014 Easy
21 Convert Sorted Array to Binary Search Tree C++ 11/4/2014 Medium
22 Balanced Binary Tree C++ 11/5/2014 Easy
23 Swap Nodes in Pairs C++ 11/6/2014 Medium
24 Remove Duplicates from Sorted Array C++ 11/7/2014 Easy
25 Sort Colors C++ 11/8/2014 Medium
26 Merge Sorted Array C++ 11/9/2014 Easy
27 Symmetric Tree C++ 11/10/2014 Easy
28 Gray Code C++ 11/11/2014 Medium
29 Unique Paths C++ 11/12/2014 Medium
30 Plus One C++ 11/13/2014 Easy
31 Generate Parentheses C++ 11/14/2014 Medium
32 Pascal's Triangle C++ 11/15/2014 Easy
33 Container With Most Water C++ 11/16/2014 Medium
34 Permutations C++ 11/17/2014 Medium
35 Rotate Image C++ 11/18/2014 Medium
36 Search a 2D Matrix C++ 11/19/2014 Medium
37 Find Minimum in Rotated Sorted Array C++ 11/20/2014 Medium
38 Minimum Path Sum C++ 11/21/2014 Medium
39 Best Time to Buy and Sell Stock C++ 11/22/2014 Medium
40 Binary Tree Level Order Traversal II C++ 11/23/2014 Easy
41 Search in Rotated Sorted Array II C++ 11/24/2014 Medium
42 Binary Tree Postorder Traversal C++ 11/25/2014 Hard
43 Linked List Cycle II C++ 11/26/2014 Medium
44 Set Matrix Zeroes C++ 11/27/2014 Medium
45 Spiral Matrix II C++ 11/28/2014 Medium
46 Remove Duplicates from Sorted Array II C++ 11/29/2014 Medium
47 Populating Next Right Pointers in Each Node II C++ 11/30/2014 Hard
48 Binary Tree Level Order Traversal C++ 12/1/2014 Easy
49 Path Sum C++ 12/2/2014 Easy
50 Pascal's Triangle II C++ 12/3/2014 Easy
51 Combinations C++ 12/4/2014 Medium
52 Sum Root to Leaf Numbers C++ 12/5/2014 Medium
53 Remove Nth Node from End of List C++ 12/6/2014 Easy
54 Minimum Depth of Binary Tree C++ 12/7/2014 Easy
55 Length of Last Word C++ 12/8/2014 Easy
56 Trapping Rain Water C++ 12/9/2014 Hard
57 Palindrome Number C++ 12/10/2014 Easy
58 Search in Rotated Sorted Array C++ 12/11/2014 Hard
59 Valid Parentheses C++ 12/12/2014 Easy
60 Flatten Binary Tree to Linked List C++ 12/13/2014 Medium
61 Longest Consecutive Sequence C++ 12/14/2014 Hard
62 Unique Paths II C++ 12/15/2014 Medium
63 Subsets C++ 12/16/2014 Medium
64 Valid Sudoku C++ 12/17/2014 Easy
65 Unique Binary Search Trees II C++ 12/18/2014 Medium
66 Convert Sorted List to Binary Search Tree C++ 12/19/2014 Medium
67 Search for a Range C++ 12/20/2014 Medium
68 Jump Game C++ 12/21/2014 Medium
69 Count and Say C++ 12/22/2014 Easy
70 Longest Common Prefix C++ 12/23/2014 Easy
71 Subsets II C++ 12/24/2014 Medium
72 Partition List C++ 12/25/2014 Medium
73 3Sum Closest C++ 12/26/2014 Medium
74 Path Sum II C++ 12/27/2014 Medium
75 Combination Sum C++ 12/28/2014 Medium
76 Triangle C++ 12/29/2014 Medium
77 Construct Binary Tree from Inorder and Postorder Traversal C++ 12/30/2014 Medium
78 Binary Tree Zigzag Level Order Traversal C++ 12/31/2014 Medium
79 Construct Binary Tree from Preorder and Inorder Traversal C++ 1/1/2015 Medium
80 Letter Combinations of a Phone Number C++ 1/2/2015 Medium
81 Reverse Linked List II C++ 1/3/2015 Medium
82 Pow(x, n) C++ 1/4/2015 Medium
83 N-Queens C++ 1/5/2015 Hard
84 Gas Station C++ 1/6/2015 Medium
85 Palindrome Partitioning C++ 1/7/2015 Medium
86 Validate Binary Search Tree C++ 1/8/2015 Medium
87 Add Binary C++ 1/9/2015 Easy
88 Edit Distance C++ 1/10/2015 Hard
89 Next Permutation C++ 1/11/2015 Medium
90 Insertion Sort List C++ 1/12/2015 Medium
91 Reverse Nodes in k-Group C++ 1/13/2015 Hard
92 Distinct Subsequences C++ 1/14/2015 Hard
93 Permutations II C++ 1/15/2015 Hard
94 Remove Duplicates from Sorted List II C++ 1/16/2015 Medium
95 Jump Game II C++ 1/17/2015 Hard
96 Combination Sum II C++ 1/18/2015 Medium
97 Anagrams C++ 1/19/2015 Medium
98 Recover Binary Search Tree C++ 1/20/2015 Hard
99 ZigZag Conversion C++ 1/21/2015 Easy
100 Copy List with Random Pointer C++ 1/22/2015 Hard
101 Clone Graph C++ 1/23/2015 Medium
102 Add Two Numbers C++ 1/24/2015 Medium
103 Scramble String C++ 1/25/2015 Hard
104 Valid Palindrome C++ 1/26/2015 Easy
105 First Missing Positive C++ 1/27/2015 Hard
106 Best Time to Buy and Sell Stock III C++ 1/28/2015 Hard
107 Sqrt(x) C++ 1/29/2015 Medium
108 Permutation Sequence C++ 1/30/2015 Medium
109 Longest Substring Without Repeating Characters C++ 1/31/2015 Medium
110 Rotate List C++ 2/1/2015 Medium
111 Implement strStr() C++ 2/2/2015 Easy
112 4Sum C++ 2/3/2015 Medium
113 Maximal Rectangle C++ 2/4/2015 Hard
114 Largest Rectangle in Histogram C++ 2/5/2015 Hard
115 Merge k Sorted Lists C++ 2/6/2015 Hard
116 Word Break C++ 2/7/2015 Medium
117 Merge Intervals C++ 2/8/2015 Hard
118 Sudoku Solver C++ 2/9/2015 Hard
119 Longest Palindromic Substring C++ 2/10/2015 Medium
120 Insert Interval C++ 2/11/2015 Hard
121 Spiral Matrix C++ 2/12/2015 Medium
122 Sort List C++ 2/13/2015 Medium
123 Restore IP Addresses C++ 2/14/2015 Medium
124 Multiply Strings C++ 2/15/2015 Medium
125 Reorder List C++ 2/16/2015 Medium
126 Binary Tree Maximum Path Sum C++ 2/17/2015 Hard
127 Regular Expression Matching C++ 2/18/2015 Hard
128 Simplify Path C++ 2/19/2015 Medium
129 Word Search C++ 2/20/2015 Medium
130 Evaluate Reverse Polish Notation C++ 2/21/2015 Medium
131 Longest Valid Parentheses C++ 2/22/2015 Hard
132 Interleaving String C++ 2/23/2015 Hard
133 Candy C++ 2/24/2015 Hard
134 Find Minimum in Rotated Sorted Array II C++ 2/25/2015 Hard
135 Word Ladder C++ 2/26/2015 Medium
136 Two Sum C++ 2/27/2015 Medium
137 Palindrome Partitioning II C++ 2/28/2015 Hard
138 Minimum Window Substring C++ 3/1/2015 Hard
139 Substring with Concatenation of All Words C++ 3/2/2015 Hard
140 Median of Two Sorted Arrays C++ 3/3/2015 Hard
141 3Sum C++ 3/4/2015 Medium
142 Divide Two Integers C++ 3/5/2015 Medium
143 Word Break II C++ 3/6/2015 Hard
144 Decode Ways C++ 3/7/2015 Medium
145 Maximum Product Subarray C++ 3/8/2015 Medium
146 String to Integer (atoi) C++ 3/9/2015 Easy
147 Wildcard Matching C++ 3/10/2015 Hard
148 Surrounded Regions C++ 3/11/2015 Medium
149 Reverse Words in a String C++ 3/12/2015 Medium
150 LRU Cache C++ 3/13/2015 Hard
151 Text Justification C++ 3/14/2015 Hard
152 Word Ladder II C++ 3/15/2015 Hard
153 Valid Number C++ 3/16/2015 Hard
154 Max Points on a Line C++ 3/17/2015 Hard

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✏️ LeetCode solutions in C++ 11 and Python3

github.com/pezy/LeetCode#leetcode

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