| # | title | topic | type | difficulty |
|---|---|---|---|---|
| 1 | Quicksort from scratch | Sorting Algorithms | Coding | Hard |
| 2 | Merge sort — prove it's stable | Sorting Algorithms | Coding | Hard |
| 3 | Insertion sort, in place | Sorting Algorithms | Coding | Medium |
| 4 | Multi-key sort with a composed comparator | Sorting Algorithms | Coding | Hard |
| 5 | Sort numbers correctly |
| Sorting Algorithms |
| Coding |
| Easy |