| 6 |
Zigzag Conversion |
Java |
Medium |
| 1048 |
Longest String Chain |
Java, Python |
Medium |
| 1018 |
Binary Prefix Divisible By 5 |
Python |
Easy |
| 1137 |
N-th Tribonacci Number |
Python |
Easy |
| 991 |
Broken Calculator |
Java |
Medium |
| 876 |
Middle of the Linked List |
Java |
Easy |
| 806 |
Number of Lines To Write String |
Java, Python |
Easy |
| 771 |
Jewels and Stones |
Java |
Easy |
| 703 |
Kth Largest Element in a Stream |
Java, Python |
Easy |
| 653 |
Two Sum IV - Input is a BST |
Java, Python |
Easy |
| 606 |
Construct String from Binary Tree |
Java, Python |
Easy |
| 686 |
Repeated String Match |
Java |
Easy |
| 560 |
Subarray Sum Equals K |
Java |
Medium |
| 509 |
Fib |
Java, Python |
Easy |
| 479 |
Largest Palindrome Product |
Java |
Hard |
| 478 |
Generate Random Point in a Circle |
Java |
Medium |
| 474 |
Ones and Zeroes |
Java |
Medium |
| 470 |
Implement Rand10() Using Rand7() |
Java |
Medium |
| 404 |
Sum of Left Leaves |
Java, Python |
Easy |
| 389 |
Find the Difference |
Java, Python |
Easy |
| 378 |
Kth Smallest Element in a Sorted Matrix |
Java |
Medium |
| 368 |
Largest Divisible Subset |
Python |
Medium |
| 344 |
Reverse String |
Java |
Easy |
| 338 |
Counting Bits |
Java, Python |
Medium |
| 322 |
Coin Change |
Java, Python |
Medium |
| 300 |
Longest Increasing Subsequence |
Java, Python |
Easy |
| 242 |
Valid Anagram |
Java, Python |
Easy |
| 239 |
Sliding Window Maximum |
Java, Python |
Hard |
| 236 |
Lowest Common Ancestor of a Binary Tree |
Java, Python |
Medium |
| 235 |
Lowest Common Ancestor of a Binary Search Tree |
Java, Python |
Easy |
| 234 |
Palindrome Linked List |
Java |
Easy |
| 232 |
Implement Queue using Stacks |
Java, Python |
Easy |
| 231 |
Power of Two |
Java, Python |
Easy |
| 226 |
Invert Binary Tree |
Java |
Easy |
| 225 |
Implement Stack using Queues |
Java, Python |
Easy |
| 217 |
Contains Duplicate |
Java, Python |
Easy |
| 216 |
Combination Sum III |
Java |
Medium |
| 212 |
Word Search II |
Java, Python |
Hard |
| 208 |
Implement Trie (Prefix Tree) |
Java, Python |
Medium |
| 206 |
Reverse Linked List |
Java, Python |
Easy |
| 204 |
Count Primes |
Java |
Easy |
| 203 |
Remove Linked List Elements |
Java, Python |
Easy |
| 191 |
Number of 1 Bits |
Java, Python |
Easy |
| 190 |
Reverse Bits |
Java |
Easy |
| 189 |
Rotate Array |
Java |
Easy |
| 169 |
Majority Element |
Java, Python |
Easy |
| 167 |
Two Sum II - Input array is sorted |
Java, Python |
Easy |
| 160 |
Intersection of Two Linked Lists |
Java, Python |
Easy |
| 152 |
Maximum Product Subarray |
Java, Python |
Medium |
| 148 |
Sort List |
Java |
Medium |
| 146 |
LRU Cache |
Java, Python |
Medium |
| 141 |
Linked List Cycle |
Java, Python |
Easy |
| 136 |
Single Number |
Java, Python |
Easy |
| 122 |
Best Time to Buy and Sell Stock II |
Java, Python |
Easy |
| 121 |
Best Time to Buy and Sell Stock |
Java, Python |
Easy |
| 120 |
Triangle |
Java, Python |
Medium |
| 118 |
Pascal's Triangle |
Java, Python |
Easy |
| 112 |
Path Sum |
Java, Python |
Easy |
| 111 |
Minimum Depth of Binary Tree |
Java, Python |
Easy |
| 108 |
Convert Sorted Array to Binary Search Tree |
Java, Python |
Easy |
| 107 |
Binary Tree Level Order Traversall II |
Java, Python |
Easy |
| 104 |
Maximum Depth of Binary Tree |
Java, Python |
Easy |
| 102 |
Binary Tree Level Order Traversa |
Java, Python |
Medium |
| 100 |
Same Tree |
Java, Python |
Easy |
| 98 |
Validate Binary Search Tree |
Java, Python |
Medium |
| 92 |
Reverse Linked List II |
Java |
Medium |
| 88 |
Merge Sorted Array |
Java, Python |
Easy |
| 83 |
Remove Duplicates from Sorted List |
Java, Python |
Easy |
| 81 |
Search in Rotated Sorted Array II |
Java |
Medium |
| 75 |
Sort Colors |
Java |
Medium |
| 72 |
Edit Distance |
Java, Python |
Hard |
| 70 |
Climbing Stairs |
Java, Python |
Easy |
| 69 |
Sqrt(x) |
Java, Python |
Easy |
| 67 |
Add Binary |
Java, Python |
Easy |
| 66 |
Plus One |
Java, Python |
Easy |
| 61 |
Rotate List |
Java |
Medium |
| 58 |
Length of Last Word |
Java, Python |
Easy |
| 53 |
Maximum Subarray |
Java, Python |
Easy |
| 52 |
N-Queens II |
Java, Python |
Hard |
| 51 |
N-Queens |
Java, Python |
Hard |
| 50 |
Pow(x, n) |
Java, Python |
Medium |
| 46 |
Permutations |
Java, Python |
Medium |
| 45 |
Jump Game II |
Java |
Hard |
| 43 |
Multiply Strings |
Java |
Medium |
| 42 |
Trapping Rain Water |
Java, Python |
Hard |
| 36 |
Valid Sudoku |
Java |
Medium |
| 35 |
Search Insert Position |
Java, Python |
Easy |
| 28 |
Implement strStr() |
Java, Python |
Easy |
| 27 |
Remove Element |
Java, Python |
Easy |
| 26 |
Remove Duplicates from Sorted Array |
Java, Python |
Easy |
| 24 |
Swap Nodes in Pairs |
Java, Python |
Medium |
| 22 |
Generate Parentheses |
Java, Python |
Medium |
| 21 |
Merge Two Sorted Lists |
Java, Python |
Easy |
| 20 |
Valid Parentheses |
Java, Python |
Easy |
| 19 |
Remove Nth Node From End of List |
Java |
Medium |
| 15 |
Three Sum |
Java, Python |
Meidum |
| 14 |
Longest Common Prefix |
Java, Python |
Easy |
| 13 |
Roman to Integer |
Java, Python |
Easy |
| 11 |
Container With Most Water |
Java, Python |
Medium |
| 9 |
Palindrome Number |
Java, Python |
Easy |
| 7 |
Reverse Integer |
Java, Python |
Easy |
| 5 |
Longest Palindromic Substring |
Java |
Medium |
| 4 |
Median of Two Sorted Arrays |
Java, Python |
Hard |
| 3 |
Longest Substring Without Repeating Characters |
Java, Python |
Medium |
| 2 |
Add Two Numbers |
Java, Python |
Medium |
| 1 |
Two Sum |
Java, Python |
Easy |