Browse problems by topic and difficulty. 3,930 problems indexed.
| Title | Difficulty | ||
|---|---|---|---|
| Root Equals Sum of Children | Easy | Solve | |
| Count Positions on Street With Required Brightness |
| Medium |
| Solve |
| Number of Times a Driver Was a Passenger | Medium | Solve |
| Find Closest Number to Zero | Easy | Solve |
| Basic Calculator | Hard | Solve |
| Number of Ways to Buy Pens and Pencils | Medium | Solve |
| Design an ATM Machine | Medium | Solve |
| Maximum Score of a Node Sequence | Hard | Solve |
| Calculate Digit Sum of a String | Easy | Solve |
| Minimum Rounds to Complete All Tasks | Medium | Solve |
| Maximum Trailing Zeros in a Cornered Path | Medium | Solve |
| Longest Path With Different Adjacent Characters | Hard | Solve |
| Maximum Cost of Trip With K Highways | Hard | Solve |
| Intersection of Multiple Arrays | Easy | Solve |
| Count Lattice Points Inside a Circle | Medium | Solve |
| Implement Stack using Queues | Easy | Solve |
| Count Number of Rectangles Containing Each Point | Medium | Solve |
| Number of Flowers in Full Bloom | Hard | Solve |
| Dynamic Pivoting of a Table | Hard | Solve |
| Dynamic Unpivoting of a Table | Hard | Solve |
| Design Video Sharing Platform | Hard | Solve |
| Count Prefixes of a Given String | Easy | Solve |
| Minimum Average Difference | Medium | Solve |
| Count Unguarded Cells in the Grid | Medium | Solve |
| Escape the Spreading Fire | Hard | Solve |