| 1 |
Two Sum |
PHP, JS |
Easy |
| 3 |
Longest Substring Without Repeating Characters |
PHP |
Medium |
| 5 |
Longest Palindromic Substring |
PHP |
Medium |
| 7 |
Reverse Integer |
PHP |
Medium |
| 15 |
3Sum |
PHP |
Medium |
| 20 |
Valid Parentheses |
PHP, JS |
Easy |
| 23 |
Merge K Sorted Lists |
PHP |
Hard |
| 24 |
Swap Nodes in Pairs |
PHP |
Medium |
| 28 |
Find the Index of the First Occurence in a String |
PHP |
Medium |
| 33 |
Search in Rotated Sorted Array |
PHP |
Medium |
| 35 |
Search Insert Position |
PHP |
Easy |
| 49 |
Group Anagrams |
PHP |
Medium |
| 53 |
Maximum Subarray |
PHP |
Medium |
| 55 |
Jump Game |
PHP |
Medium |
| 58 |
Length of Last Word |
PHP, JS |
Easy |
| 61 |
Rotate List |
PHP |
Medium |
| 83 |
Remove Duplicates from Sorted List |
PHP, JS |
Easy |
| 88 |
Merge Sorted Array |
PHP |
Easy |
| 94 |
Binary Tree Inorder Traversal |
PHP |
Easy |
| 104 |
Maximum Depth of Binary Tree |
PHP |
Easy |
| 105 |
Construct Binary Tree from Preorder and Inorder Traversal |
PHP |
Medium |
| 111 |
Minimum Depth of Binary Tree |
PHP |
Easy |
| 121 |
Best Time To Buy and Sell Stock |
PHP, JS |
Easy |
| 134 |
Gas Station |
PHP |
Medium |
| 142 |
Linked List Cycle II |
PHP |
Medium |
| 144 |
Binary Tree Preorder Traversal |
PHP |
Easy |
| 145 |
Binary Tree Postorder Traversal |
PHP |
Easy |
| 155 |
Min Stack |
PHP |
Medium |
| 167 |
Two Sum II - Input Array is Sorted |
PHP |
Medium |
| 189 |
Rotate Array |
PHP |
Medium |
| 198 |
House Robber |
PHP |
Medium |
| 200 |
Number of Islands |
PHP |
Medium |
| 203 |
Remove Linked List Elements |
PHP |
Easy |
| 207 |
Course Schedule |
PHP |
Medium |
| 213 |
House Robber II |
PHP |
Medium |
| 230 |
Kth Smallest Element In a BST |
PHP |
Medium |
| 238 |
Product of Array Except Self |
PHP |
Medium |
| 303 |
Range Sum Query - Immutable |
PHP |
Easy |
| 347 |
Top K Frequent Elements |
PHP |
Medium |
| 417 |
Pacific Atlantic Water Flow |
PHP |
Medium |
| 438 |
Find All Anagrams in a String |
PHP |
Medium |
| 540 |
Single Element In a Sorted Array |
PHP |
Medium |
| 547 |
Number of Provinces |
PHP |
Medium |
| 560 |
Subarray Sum Equals K |
PHP |
Medium |
| 622 |
Design Circular Queue |
PHP |
Medium |
| 647 |
Palindromic Substrings |
PHP |
Medium |
| 678 |
Valid Parenthesis String |
PHP |
Medium |
| 704 |
Binary Search |
PHP |
Easy |
| 707 |
Design Linked List |
PHP |
Medium |
| 746 |
Min Cost Climbing Stairs |
PHP |
Easy |
| 846 |
Hand of Straights |
PHP |
Medium |
| 875 |
Koko Eating Bananas |
PHP |
Medium |
| 904 |
Fruit Into Baskets |
PHP |
Medium |
| 977 |
Squares of a Sorted Array |
PHP |
Easy |
| 1137 |
N-th Tribonacci Number |
PHP |
Easy |
| 1202 |
Smallest String With Swaps |
PHP |
Medium |
| 1876 |
Substrings of Size Three with Distinct Characters |
PHP |
Easy |
| 1909 |
Remove One Element to Make the Array Strictly Increasing |
PHP |
Easy |
| 1971 |
Find If Path Exists in Graph |
PHP |
Easy |
| 2500 |
Delete Greatest Element in Each Row |
PHP |
Easy |