Browse problems by topic and difficulty. 3,930 problems indexed.
| Title | Difficulty | ||
|---|---|---|---|
| Reformat Department Table | Easy | Solve | |
| Easy |
| Solve |
| Count Substrings with Only One Distinct Letter | Easy | Solve |
| Before and After Puzzle | Medium | Solve |
| Shortest Distance to Target Color | Medium | Solve |
| Maximum Number of Ones | Hard | Solve |
| Distance Between Bus Stops | Easy | Solve |
| Day of the Week | Easy | Solve |
| Maximum Subarray Sum with One Deletion | Medium | Solve |
| Make Array Strictly Increasing | Hard | Solve |
| Design Bounded Blocking Queue | Medium | Solve |
| Maximum Number of Balloons | Easy | Solve |
| Pascal's Triangle II | Easy | Solve |
| Reverse Substrings Between Each Pair of Parentheses | Medium | Solve |
| K-Concatenation Maximum Sum | Medium | Solve |
| Critical Connections in a Network | Hard | Solve |
| Monthly Transactions I | Medium | Solve |
| Tournament Winners | Hard | Solve |
| Fizz Buzz Multithreaded | Medium | Solve |
| How Many Apples Can You Put into the Basket | Easy | Solve |
| Minimum Knight Moves | Medium | Solve |
| Find Smallest Common Element in All Rows | Medium | Solve |
| Minimum Time to Build Blocks | Hard | Solve |
| Integer to Roman | Medium | Solve |
| Triangle | Medium | Solve |