String
Problems
| Length | 907 / 914 | 800 | |
| Word Count | 809 / 843 | 800 | |
| lowercase | 799 / 809 | 800 | |
| Vowel | 745 / 757 | 800 | |
| Digit sum | 753 / 769 | 800 | |
| Strong password | 724 / 740 | 800 | |
| Letter frequencies | 676 / 682 | 800 | |
| Palindrome string | 712 / 716 | 800 | |
| Palindrome substring | 545 / 567 | 800 | |
| Caesar cipher | 522 / 588 | 800 | |
| String occurences | 568 / 583 | 800 | |
| Sum | 483 / 546 | 800 | |
| String normalization | 490 / 544 | 800 | |
| Run-length encoding | 435 / 515 | 800 | |
| Expression | 284 / 312 | 800 |