| 001 |
Two Sum |
Cpp Java Py |
? |
| 002 |
Add Two Numbers |
Cpp Java Py |
? |
| 003 |
Longest Substring Without Repeating Characters |
Cpp Java Py |
? |
| 004 |
Median of Two Sorted Arrays |
Cpp Java Py |
? |
| 005 |
Longest Palindromic Substring |
Cpp Java Py |
? |
| 006 |
ZigZag Conversion |
Cpp Java Py |
? |
| 007 |
Reverse Integer |
Cpp Java Py |
? |
| 008 |
String to Integer |
Cpp Java Py |
? |
| 009 |
Palindrome Number |
Cpp |
- |
| 010 |
Regular Expression Matching |
Cpp |
- |
| 011 |
Container With Most Water |
Cpp |
- |
| 012 |
Integer to Roman |
Cpp |
- |
| 013 |
Roman to Integer |
Cpp |
- |
| 014 |
Longest Common Prefix |
Cpp |
- |
| 015 |
3Sum |
Cpp |
- |
| 016 |
3Sum Closest |
Cpp |
- |
| 017 |
Letter Combinations of a Phone Number |
Cpp |
- |
| 018 |
4Sum |
Cpp |
- |
| 019 |
Remove Nth Node From End of List |
Cpp |
- |
| 020 |
Valid Parentheses |
Cpp |
- |
| 021 |
Merge Two Sorted Lists |
Cpp |
- |
| 022 |
Generate Parentheses |
Cpp |
- |
| 023 |
Merge k Sorted Lists |
Cpp |
- |
| 024 |
Swap Nodes in Pairs |
Cpp |
- |
| 025 |
Reverse Nodes in k-Group |
Cpp |
- |
| 026 |
Remove Duplicates from Sorted Array |
Cpp |
- |
| 027 |
Remove Element |
Cpp |
- |
| 028 |
Implement strStr() |
Cpp |
- |
| 029 |
Divide Two Integers |
Cpp |
- |
| 030 |
Substring with Concatenation of All Words |
Cpp |
- |
| 031 |
Next Permutation |
Cpp |
- |
| 032 |
Longest Valid Parentheses |
Cpp |
- |
| 033 |
Search in Rotated Sorted Array |
Cpp |
- |
| 034 |
Search for a Range |
Cpp |
- |
| 035 |
Search Insert Position |
Cpp |
- |
| 036 |
Valid Sudoku |
Cpp |
- |
| 037 |
Sudoku Solver |
Cpp |
- |
| 038 |
Count and Say |
Cpp |
- |
| 039 |
Combination Sum |
Cpp |
- |
| 040 |
Combination Sum II |
Cpp |
- |
| 041 |
First Missing Positive |
Cpp |
- |
| 042 |
Trapping Rain Water |
Cpp |
- |
| 043 |
Multiply Strings |
Cpp |
- |
| 044 |
Wildcard Matching |
Cpp |
- |
| 045 |
Jump Game II |
Cpp |
- |
| 046 |
Permutations |
Cpp |
- |
| 047 |
Permutations II |
Cpp |
- |
| 048 |
Rotate Image |
Cpp |
- |
| 049 |
Anagrams |
Cpp |
- |
| 050 |
Pow(x, n) |
Cpp |
- |
| 051 |
N-Queens |
Cpp Java Py |
- |
| 052 |
N-Queens II |
Cpp Java Py |
- |
| 053 |
Maximum Subarray |
Cpp |
- |
| 054 |
Spiral Matrix |
Cpp |
- |
| 055 |
Jump Game |
Cpp |
- |
| 056 |
Merge Intervals |
Cpp |
- |
| 057 |
Insert Interval |
Cpp |
- |
| 058 |
Length of Last Word |
Cpp |
- |
| 059 |
Spiral Matrix II |
Cpp |
- |
| 060 |
Permutation Sequence |
Cpp |
- |
| 061 |
Rotate List |
Cpp |
- |
| 062 |
Unique Paths |
Cpp |
- |
| 063 |
Unique Paths II |
Cpp |
- |
| 064 |
Minimum Path Sum |
Cpp |
- |
| 065 |
Valid Number |
Cpp Java Py |
- |
| 066 |
Plus One |
Cpp |
- |
| 067 |
Add Binary |
Cpp |
- |
| 068 |
Text Justification |
- |
- |
| 069 |
Sqrt(x) |
Cpp Java Py |
- |
| 070 |
Climbing Stairs |
Cpp |
- |
| 071 |
Simplify Path |
Cpp Java Py |
- |
| 072 |
Edit Distance |
Cpp |
- |
| 073 |
Set Matrix Zeroes |
Cpp |
- |
| 074 |
Search a 2D Matrix |
Cpp |
- |
| 075 |
Sort Colors |
Cpp |
- |
| 076 |
Minimum Window Substring |
- |
- |
| 077 |
Combinations |
Cpp |
- |
| 078 |
Subsets |
Cpp Java Py |
- |
| 079 |
Word Search |
Cpp |
- |
| 080 |
Remove Duplicates from Sorted Array II |
Cpp |
- |
| 081 |
Search in Rotated Sorted Array II |
Cpp |
- |
| 082 |
Remove Duplicates from Sorted List II |
Cpp |
- |
| 083 |
Remove Duplicates from Sorted List |
Cpp |
- |
| 084 |
Largest Rectangle in Histogram |
- |
- |
| 085 |
Maximal Rectangle |
- |
- |
| 086 |
Partition List |
Cpp Java Py |
- |
| 087 |
Scramble String |
- |
- |
| 088 |
Merge Sorted Array |
Cpp |
- |
| 089 |
Gray Code |
Cpp Java Py |
- |
| 090 |
Subsets II |
Cpp Java Py |
- |
| 091 |
Decode Ways |
Cpp Java Py |
- |
| 092 |
Reverse Linked List II |
Cpp |
- |
| 093 |
Restore IP Addresses |
- |
- |
| 094 |
Binary Tree Inorder Traversal |
Cpp |
- |
| 095 |
Unique Binary Search Trees |
Cpp |
- |
| 096 |
Unique Binary Search Trees II |
- |
- |
| 097 |
Interleaving String |
- |
- |
| 098 |
Validate Binary Search Tree |
- |
- |
| 099 |
Recover Binary Search Tree |
- |
- |
| 100 |
Same Tree |
Cpp |
- |
| 101 |
Symmetric Tree |
Cpp |
- |
| 102 |
Binary Tree Level Order Traversal |
Cpp |
- |
| 103 |
Binary Tree Zigzag Level Order Traversal |
- |
- |
| 104 |
Maximum Depth of Binary Tree |
Cpp |
- |
| 105 |
Construct Binary Tree from Preorder and Inorder Traversal |
- |
- |
| 106 |
Construct Binary Tree from Inorder and Postorder Traversal |
- |
- |
| 107 |
Binary Tree Level Order Traversal II |
Cpp |
- |
| 108 |
Convert Sorted Array to Binary Search Tree |
- |
- |
| 109 |
Convert Sorted List to Binary Search Tree |
- |
- |
| 110 |
Balanced Binary Tree |
Cpp |
- |
| 111 |
Minimum Depth of Binary Tree |
Cpp |
- |
| 112 |
Path Sum |
Cpp |
- |
| 113 |
Path Sum II |
Cpp Java Py |
- |
| 114 |
Flatten Binary Tree to Linked List |
- |
- |
| 115 |
Distinct Subsequences |
- |
- |
| 116 |
Populating Next Right Pointers in Each Node |
Cpp Java Py |
- |
| 117 |
Populating Next Right Pointers in Each Node II |
Cpp Java Py |
- |
| 118 |
Pascals Triangle |
Cpp |
- |
| 119 |
Pascal’s Triangle II |
Cpp |
- |
| 120 |
Triangle |
Cpp Java Py |
- |
| 121 |
Best Time to Buy and Sell Stock |
- |
- |
| 122 |
Best Time to Buy and Sell Stock II |
- |
- |
| 123 |
Best Time to Buy and Sell Stock III |
- |
- |
| 124 |
Binary Tree Maximum Path Sum |
- |
- |
| 125 |
Valid Palindrome |
Cpp |
- |
| 126 |
Word Ladder |
- |
- |
| 127 |
Word Ladder II |
- |
- |
| 128 |
Longest Consecutive Sequence |
- |
- |
| 129 |
Sum Root to Leaf Numbers |
Cpp |
- |
| 130 |
Surrounded Regions |
- |
- |
| 131 |
Palindrome Partitioning |
- |
- |
| 132 |
Palindrome Partitioning II |
- |
- |
| 133 |
Clone Graph |
Cpp |
- |
| 134 |
Gas Station |
- |
- |
| 135 |
Candy |
- |
- |
| 136 |
Single Number |
Cpp |
- |
| 137 |
Single Number II |
Cpp |
- |
| 138 |
Copy List with Random Pointer |
- |
- |
| 139 |
Word Break |
- |
- |
| 140 |
Word Break II |
- |
- |
| 141 |
Linked List Cycle |
Cpp |
- |
| 142 |
Linked List Cycle II |
- |
- |
| 143 |
Reorder List |
Cpp |
- |
| 144 |
Binary Tree Preorder Traversal |
Cpp |
- |
| 145 |
Binary Tree Postorder Traversal |
Cpp |
- |
| 146 |
LRU Cache |
- |
- |
| 147 |
Insertion Sort List |
Cpp |
- |
| 148 |
Sort List |
- |
- |
| 149 |
Max Points on a Line |
- |
- |
| 150 |
Evaluate Reverse Polish Notation |
- |
- |
| 151 |
Reverse Words in a String |
- |
- |
| 152 |
Maximum Product Subarray |
Cpp |
- |
| 153 |
Find Minimum in Rotated Sorted Array |
- |
- |
| 154 |
Find Minimum in Rotated Sorted Array II |
- |
- |
| 155 |
Min Stack |
Cpp |
- |
| 156 |
Binary Tree Upside Down |
- |
- |
| 157 |
Read N Characters Given Read4 |
- |
- |
| 158 |
Read N Characters Given Read4 II - Call multiple times |
- |
- |
| 159 |
Longest Substring with At Most Two Distinct Characters |
- |
- |
| 160 |
Intersection of Two Linked Lists |
Cpp |
- |
| 161 |
One Edit Distance |
- |
- |
| 162 |
Find Peak Element |
Cpp Java Py |
- |
| 163 |
Missing Ranges |
- |
- |
| 164 |
Maximum Gap |
- |
- |
| 165 |
Compare Version Numbers |
Cpp |
- |
| 166 |
Fraction to Recurring Decimal |
- |
- |
| 167 |
Two Sum II - Input array is sorted |
- |
- |
| 168 |
Excel Sheet Column Title |
Cpp Java Py |
- |
| 169 |
Majority Element |
Cpp Java Py |
- |
| 170 |
Two Sum III - Data structure design |
- |
- |
| 171 |
Excel Sheet Column Number |
Cpp Java Py |
- |
| 172 |
Factorial Trailing Zeroes |
Cpp Java Py |
- |
| 173 |
Binary Search Tree Iterator |
- |
- |
| 174 |
Dungeon Game |
- |
- |
| 175 |
Combine Two Tables |
Sql |
- |
| 176 |
Second Highest Salary |
Sql |
- |
| 177 |
Nth Highest Salary |
- |
- |
| 178 |
Rank Scores |
- |
- |
| 179 |
Largest Number |
Cpp Java Py |
- |
| 180 |
Consecutive Numbers |
- |
- |
| 181 |
Employees Earning More Than Their Managers |
- |
- |
| 182 |
Duplicate Emails |
Sql |
- |
| 183 |
Customers Who Never Order |
- |
- |
| 184 |
Department Highest Salary |
- |
- |
| 185 |
Department Top Three Salaries |
- |
- |
| 186 |
Reverse Words in a String II |
- |
- |
| 187 |
Repeated DNA Sequences |
Cpp Java Py |
- |
| 188 |
Best Time to Buy and Sell Stock IV |
- |
- |
| 189 |
Rotate Array |
- |
- |