Browse problems by topic and difficulty. 3,930 problems indexed.
| Title | Difficulty | ||
|---|---|---|---|
| Find Occurrences of an Element in an Array | Medium | Solve |
| Remove Duplicate Letters | Medium | Solve |
| Find the Number of Distinct Colors Among the Balls | Medium | Solve |
| Block Placement Queries | Hard | Solve |
| Find the Number of Good Pairs I | Easy | Solve |
| String Compression III | Medium | Solve |
| Find the Number of Good Pairs II | Medium | Solve |
| Maximum Sum of Subsequence With Non-adjacent Elements | Hard | Solve |
| Calculate Parking Fees and Duration | Medium | Solve |
| Better Compression of String | Medium | Solve |
| Minimum Number of Chairs in a Waiting Room | Easy | Solve |
| Count Days Without Meetings | Medium | Solve |
| Shortest Distance from All Buildings | Hard | Solve |
| Lexicographically Minimum String After Removing Stars | Medium | Solve |
| Find Subarray With Bitwise OR Closest to K | Hard | Solve |
| Second Day Verification | Easy | Solve |
| Bitwise OR of Adjacent Elements | Easy | Solve |
| Clear Digits | Easy | Solve |
| Find The First Player to win K Games in a Row | Medium | Solve |
| Find the Maximum Length of a Good Subsequence I | Medium | Solve |
| Find the Maximum Length of a Good Subsequence II | Hard | Solve |
| Find the Child Who Has the Ball After K Seconds | Easy | Solve |
| Find the N-th Value After K Seconds | Medium | Solve |
| Maximum Product of Word Lengths | Medium | Solve |
| Maximum Total Reward Using Operations I | Medium | Solve |