763 problems · Solve with AI-powered hints & explanations
| # | Title | Difficulty |
|---|---|---|
| 492 | Construct the Rectangle | Easy |
| 495 | Teemo Attacking | Easy |
| 496 | Next Greater Element I | Easy |
Page 3 of 16
| 500 |
| Keyboard Row |
| Easy |
| 501 | Find Mode in Binary Search Tree | Easy |
| 504 | Base 7 | Easy |
| 506 | Relative Ranks | Easy |
| 507 | Perfect Number | Easy |
| 509 | Fibonacci Number | Easy |
| 511 | Game Play Analysis I | Easy |
| 520 | Detect Capital | Easy |
| 521 | Longest Uncommon Subsequence I | Easy |
| 530 | Minimum Absolute Difference in BST | Easy |
| 541 | Reverse String II | Easy |
| 543 | Diameter of Binary Tree | Easy |
| 551 | Student Attendance Record I | Easy |
| 557 | Reverse Words in a String III | Easy |
| 559 | Maximum Depth of N-ary Tree | Easy |
| 561 | Array Partition | Easy |
| 563 | Binary Tree Tilt | Easy |
| 566 | Reshape the Matrix | Easy |
| 572 | Subtree of Another Tree | Easy |
| 575 | Distribute Candies | Easy |
| 577 | Employee Bonus | Easy |
| 584 | Find Customer Referee | Easy |
| 586 | Customer Placing the Largest Number of Orders | Easy |
| 589 | N-ary Tree Preorder Traversal | Easy |
| 590 | N-ary Tree Postorder Traversal | Easy |
| 594 | Longest Harmonious Subsequence | Easy |
| 595 | Big Countries | Easy |
| 596 | Classes With at Least 5 Students | Easy |
| 598 | Range Addition II | Easy |
| 599 | Minimum Index Sum of Two Lists | Easy |
| 605 | Can Place Flowers | Easy |
| 607 | Sales Person | Easy |
| 610 | Triangle Judgement | Easy |
| 617 | Merge Two Binary Trees | Easy |
| 619 | Biggest Single Number | Easy |
| 620 | Not Boring Movies | Easy |
| 627 | Swap Salary | Easy |
| 628 | Maximum Product of Three Numbers | Easy |
| 637 | Average of Levels in Binary Tree | Easy |
| 643 | Maximum Average Subarray I | Easy |
| 645 | Set Mismatch | Easy |
| 653 | Two Sum IV - Input is a BST | Easy |
| 657 | Robot Return to Origin | Easy |
| 661 | Image Smoother | Easy |
| 671 | Second Minimum Node In a Binary Tree | Easy |
| 674 | Longest Continuous Increasing Subsequence | Easy |
| 680 | Valid Palindrome II | Easy |
© 2026 PhantomCodeAI. All rights reserved.