Browse problems by topic and difficulty. 3,930 problems indexed.
| Title | Difficulty | ||
|---|---|---|---|
| New 21 Game | Medium | Solve |
| Push Dominoes | Medium | Solve |
| Similar String Groups | Hard | Solve |
| Largest Rectangle in Histogram | Hard | Solve |
| Magic Squares In Grid | Medium | Solve |
| Keys and Rooms | Medium | Solve |
| Split Array into Fibonacci Sequence | Medium | Solve |
| Guess the Word | Hard | Solve |
| Backspace String Compare | Easy | Solve |
| Longest Mountain in Array | Medium | Solve |
| Hand of Straights | Medium | Solve |
| Shortest Path Visiting All Nodes | Hard | Solve |
| Shifting Letters | Medium | Solve |
| Maximize Distance to Closest Person | Medium | Solve |
| Maximal Rectangle | Hard | Solve |
| Rectangle Area II | Hard | Solve |
| Loud and Rich | Medium | Solve |
| Peak Index in a Mountain Array | Medium | Solve |
| Car Fleet | Medium | Solve |
| K-Similar Strings | Hard | Solve |
| Exam Room | Medium | Solve |
| Score of Parentheses | Medium | Solve |
| Minimum Cost to Hire K Workers | Hard | Solve |
| Mirror Reflection | Medium | Solve |
| Buddy Strings | Easy | Solve |