String
Problems
| Length | 822 / 829 | 800 | |
| Word Count | 735 / 768 | 800 | |
| lowercase | 725 / 734 | 800 | |
| Vowel | 679 / 691 | 800 | |
| Digit sum | 684 / 701 | 800 | |
| Strong password | 662 / 677 | 800 | |
| Letter frequencies | 618 / 625 | 800 | |
| Palindrome string | 649 / 654 | 800 | |
| Palindrome substring | 481 / 506 | 800 | |
| Caesar cipher | 468 / 534 | 800 | |
| String occurences | 511 / 524 | 800 | |
| Sum | 441 / 499 | 800 | |
| String normalization | 444 / 496 | 800 | |
| Run-length encoding | 392 / 467 | 800 | |
| Expression | 242 / 269 | 800 |