String
Problems
| Length | 897 / 904 | 800 | |
| Word Count | 800 / 834 | 800 | |
| lowercase | 789 / 799 | 800 | |
| Vowel | 737 / 749 | 800 | |
| Digit sum | 745 / 761 | 800 | |
| Strong password | 714 / 730 | 800 | |
| Letter frequencies | 669 / 675 | 800 | |
| Palindrome string | 701 / 705 | 800 | |
| Palindrome substring | 534 / 556 | 800 | |
| Caesar cipher | 512 / 577 | 800 | |
| String occurences | 561 / 576 | 800 | |
| Sum | 475 / 537 | 800 | |
| String normalization | 481 / 535 | 800 | |
| Run-length encoding | 428 / 507 | 800 | |
| Expression | 277 / 305 | 800 |