| 001 |
Two Sum |
C# |
Easy |
| 002 |
Add Two Numbers |
C# |
Medium |
| 003 |
Longest Substring Without Repeating Characters |
C# |
Medium |
| 004 |
Median of Two Sorted Arrays |
C# |
Hard |
| 005 |
Longest Palindromic Substring |
C# |
Medium |
| 006 |
ZigZag Conversion |
C# |
Easy |
| 007 |
Reverse Integer |
C# |
Easy |
| 008 |
String to Integer (atoi) |
C# |
Easy |
| 009 |
Palindrome Number |
C# |
Easy |
| 010 |
Regular Expression Matching |
C# |
Hard |
| 011 |
Container With Most Water |
C# |
Medium |
| 012 |
Integer to Roman |
C# |
Medium |
| 013 |
Roman to Integer |
C# |
Easy |
| 014 |
Longest Common Prefix |
C# |
Easy |
| 015 |
3Sum |
C# |
Medium |
| 016 |
3Sum Closest |
C# |
Medium |
| 017 |
Letter Combinations of a Phone Number |
C# |
Medium |
| 018 |
4Sum |
C# |
Medium |
| 019 |
Remove Nth Node From End of List |
C# |
Easy |
| 020 |
Valid Parentheses |
C# |
Easy |
| 021 |
Merge Two Sorted Lists |
C# |
Easy |
| 022 |
Generate Parentheses |
C# |
Medium |
| 023 |
Merge k Sorted Lists |
C# |
Hard |
| 024 |
Swap Nodes in Pairs |
C# |
Easy |
| 025 |
Reverse Nodes in k-Group |
C# |
Hard |
| 026 |
Remove Duplicates from Sorted Array |
C# |
Easy |
| 027 |
Remove Element |
C# |
Easy |
| 028 |
Implement strStr |
C# |
Easy |
| 029 |
Divide Two Integers |
C# |
Medium |
| 030 |
Substring with Concatenation of All Words |
C# |
Hard |
| 031 |
Next Permutation |
C# |
Medium |
| 032 |
Longest Valid Parentheses |
C# |
Hard |
| 033 |
Search in Rotated Sorted Array |
C# |
Hard |
| 034 |
Search for a Range |
C# |
Medium |
| 035 |
Search Insert Position |
C# |
Medium |
| 036 |
Valid Sudoku |
C# |
Easy |
| 037 |
Sudoku Solver |
C# |
Hard |
| 038 |
Count and Say |
C# |
Easy |
| 039 |
Combination Sum |
C# |
Medium |
| 040 |
Combination Sum II |
C# |
Medium |
| 041 |
First Missing Positive |
C# |
Hard |
| 042 |
Trapping Rain Water |
C# |
Hard |
| 043 |
Multiply Strings |
C# |
Medium |
| 044 |
Wildcard Matching |
C# |
Hard |
| 045 |
Jump Game II |
C# |
Hard |
| 046 |
Permutations |
C# |
Medium |
| 047 |
Permutations II |
C# |
Medium |
| 048 |
Rotate Image |
C# |
Medium |
| 049 |
Group Anagrams |
C# |
Medium |
| 050 |
Powx, n |
C# |
Medium |
| 051 |
NQueens |
C# |
Hard |
| 052 |
NQueens II |
C# |
Hard |
| 053 |
Maximum Subarray |
C# |
Medium |
| 054 |
Spiral Matrix |
C# |
Medium |
| 055 |
Jump Game |
C# |
Medium |
| 056 |
Merge Intervals |
C# |
Hard |
| 057 |
Insert Interval |
C# |
Hard |
| 058 |
Length of Last Word |
C# |
Easy |
| 059 |
Spiral Matrix II |
C# |
Medium |
| 060 |
Permutation Sequence |
C# |
Medium |
| 061 |
Rotate List |
C# |
Medium |
| 062 |
Unique Paths |
C# |
Medium |
| 063 |
Unique Paths II |
C# |
Medium |
| 064 |
Minimum Path Sum |
C# |
Medium |
| 065 |
Valid Number |
C# |
Hard |
| 066 |
Plus One |
C# |
Easy |
| 067 |
Add Binary |
C# |
Easy |
| 068 |
Text Justification |
C# |
Hard |
| 069 |
Sqrtx |
C# |
Medium |
| 070 |
Climbing Stairs |
C# |
Easy |
| 071 |
Simplify Path |
C# |
Medium |
| 072 |
Edit Distance |
C# |
Hard |
| 073 |
Set Matrix Zeroes |
C# |
Medium |
| 074 |
Search a 2D Matrix |
C# |
Medium |
| 075 |
Sort Colors |
C# |
Medium |
| 076 |
Minimum Window Substring |
C# |
Hard |
| 077 |
Combinations |
C# |
Medium |
| 078 |
Subsets |
C# |
Medium |
| 079 |
Word Search |
C# |
Medium |
| 080 |
Remove Duplicates from Sorted Array II |
C# |
Medium |
| 081 |
Search in Rotated Sorted Array II |
C# |
Medium |
| 082 |
Remove Duplicates from Sorted List II |
C# |
Medium |
| 083 |
Remove Duplicates from Sorted List |
C# |
Easy |
| 084 |
Largest Rectangle in Histogram |
C# |
Hard |
| 085 |
Maximal Rectangle |
C# |
Hard |
| 086 |
Partition List |
C# |
Medium |
| 087 |
Scramble String |
C# |
Hard |
| 088 |
Merge Sorted Array |
C# |
Easy |
| 089 |
Gray Code |
C# |
Medium |
| 090 |
Subsets II |
C# |
Medium |
| 091 |
Decode Ways |
C# |
Medium |
| 092 |
Reverse Linked List II |
C# |
Medium |
| 093 |
Restore IP Addresses |
C# |
Medium |
| 094 |
Binary Tree Inorder Traversal |
C# |
Medium |
| 095 |
Unique Binary Search Trees II |
C# |
Medium |
| 096 |
Unique Binary Search Trees |
C# |
Medium |
| 097 |
Interleaving String |
C# |
Hard |
| 098 |
Validate Binary Search Tree |
C# |
Medium |
| 099 |
Recover Binary Search Tree |
C# |
Hard |
| 100 |
Same Tree |
C# |
Easy |
| 101 |
Symmetric Tree |
C# |
Easy |
| 102 |
Binary Tree Level Order Traversal |
C# |
Medium |
| 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 |