Browse problems by topic and difficulty. 3,930 problems indexed.
| Title | Difficulty | ||
|---|---|---|---|
| Paint House IV | Medium | Solve | |
| Integer Break |
| Medium |
| Solve |
| Maximum and Minimum Sums of at Most Size K Subarrays | Hard | Solve |
| Minimum Unlocked Indices to Sort Nums | Medium | Solve |
| Count Partitions with Even Sum Difference | Easy | Solve |
| Count Mentions Per User | Medium | Solve |
| Maximum Frequency After Subarray Operation | Medium | Solve |
| Frequencies of Shortest Supersequences | Hard | Solve |
| Find Valid Emails | Easy | Solve |
| Permutations III | Medium | Solve |
| Find Valid Pair of Adjacent Digits in String | Easy | Solve |
| Reschedule Meetings for Maximum Free Time I | Medium | Solve |
| Reverse String | Easy | Solve |
| Reschedule Meetings for Maximum Free Time II | Medium | Solve |
| Minimum Cost Good Caption | Hard | Solve |
| Maximum Difference Between Even and Odd Frequency I | Easy | Solve |
| Maximum Manhattan Distance After K Changes | Medium | Solve |
| Minimum Increments for Target Multiples in an Array | Hard | Solve |
| Maximum Difference Between Even and Odd Frequency II | Hard | Solve |
| Sort Matrix by Diagonals | Medium | Solve |
| Assign Elements to Groups with Constraints | Medium | Solve |
| Count Substrings Divisible By Last Digit | Hard | Solve |
| Maximize the Minimum Game Score | Hard | Solve |
| Reverse Vowels of a String | Easy | Solve |
| Maximum Students on a Single Bench | Easy | Solve |