| 1812 |
Determine Color of a Chessboard Square |
Java |
Easy |
| 1550 |
Three Consecutive Odds |
Go |
Easy |
| 992 |
Sort Array By Parity II |
Go |
Easy |
| 977 |
Squares of a Sorted Array |
Go |
Easy |
| 876 |
Middle of the Linked List |
Java, Ruby |
Easy |
| 766 |
Toeplitz Matrix |
Java, Go |
Easy |
| 724 |
Find Pivot Index |
Java, Go |
Easy |
| 674 |
Longest Continuous Increasing Subsequence |
Java, Go |
Easy |
| 665 |
Non-decreasing Array |
Java, Go |
Easy |
| 643 |
Maximum Average Subarray I |
Java, Go |
Easy |
| 628 |
Maximum Product of Three Numbers |
Java, Ruby |
Easy |
| 566 |
Reshape the Matrix |
Java, Go |
Easy |
| 561 |
Array Partition I |
Java, Ruby |
Easy |
| 509 |
Fibonacci Number |
Java, Ruby |
Easy |
| 448 |
Find All Numbers Disappeared in an Array |
Java, Ruby |
Easy |
| 414 |
Third Maximum Number |
Java |
Easy |
| 350 |
Intersection of Two Arrays II |
Java |
Easy |
| 283 |
Move Zeroes |
Java, Ruby |
Easy |
| 268 |
Missing Number |
Java, Ruby |
Easy |
| 263 |
Ugly Number |
Java, Go |
Easy |
| 237 |
Delete Node in a Linked List |
Java, Ruby |
Easy |
| 232 |
Implement Queue using Stacks |
Java |
Easy |
| 228 |
Summary Ranges |
Java |
Easy |
| 219 |
Contains Duplicate II |
Java |
Easy |
| 217 |
Contains Duplicate |
Java, Ruby |
Easy |
| 206 |
Reverse Linked List |
Java, Ruby |
Easy |
| 203 |
Remove Linked List Elements |
Java, Go |
Easy |
| 172 |
Factorial Trailing Zeroes |
Java, Ruby |
Easy |
| 167 |
Two Sum II |
Java |
Easy |
| 160 |
Intersection of Two Linked Lists |
Java |
Easy |
| 155 |
Min Stack |
Java, Go |
Easy |
| 137 |
Single Number II |
Java |
Easy |
| 136 |
Single Number |
Java |
Easy |
| 122 |
Best Time to Buy and Sell Stock II |
Java |
Easy |
| 121 |
Best Time to Buy and Sell Stock |
Java |
Easy |
| 119 |
Pascal's Triangle II |
Java, Ruby |
Easy |
| 118 |
Pascal's Triangle |
Java, Ruby |
Easy |
| 104 |
Maximum Depth of Binary Tree |
Java |
Easy |
| 101 |
Symmetric Tree |
Java |
Easy |
| 100 |
Same Tree |
Java |
Easy |
| 88 |
Merge Sorted Array |
Java |
Easy |
| 83 |
Remove Duplicates from Sorted List |
Java |
Easy |
| 70 |
Climbing Stairs |
Java, Ruby |
Easy |
| 67 |
Add Binary |
Java |
Easy |
| 66 |
Plus One |
Java, Ruby |
Easy |
| 58 |
Length of Last Word |
Java, Ruby |
Easy |
| 53 |
Maximum Sub Array |
Java, Ruby |
Easy |
| 38 |
Count and Say |
Java |
Easy |
| 35 |
Search Insert Position |
Java, Ruby |
Easy |
| 28 |
Implement strStr |
Java, Ruby |
Easy |
| 27 |
Remove Element |
Java, Ruby |
Easy |
| 26 |
Remove Duplicates from Sorted Array |
Java, Ruby |
Easy |
| 21 |
Merge Two Sorted Lists |
Java, Ruby |
Easy |
| 20 |
Valid Parentheses |
Java, Ruby |
Easy |
| 14 |
Longest Common Prefix |
Java, Ruby |
Easy |
| 13 |
Roman to Integer |
Java, Ruby |
Easy |
| 9 |
Palindrome Number |
Java, Ruby, Go |
Easy |
| 7 |
Reverse Integer |
Java, Ruby, Go |
Easy |
| 3 |
Longest Substring Without Repeating Characters |
Go |
Middle |
| 1 |
Two Sum |
Java, Ruby, Go |
Easy |