String
Problems
| Length | 1059 / 1066 | 800 | |
| Word Count | 946 / 981 | 800 | |
| lowercase | 942 / 955 | 800 | |
| Vowel | 883 / 898 | 800 | |
| Digit sum | 890 / 909 | 800 | |
| Strong password | 860 / 877 | 800 | |
| Letter frequencies | 800 / 807 | 800 | |
| Palindrome string | 835 / 840 | 800 | |
| Palindrome substring | 655 / 680 | 800 | |
| Caesar cipher | 625 / 695 | 800 | |
| String occurences | 672 / 688 | 800 | |
| Sum | 576 / 640 | 800 | |
| String normalization | 580 / 641 | 800 | |
| Run-length encoding | 520 / 610 | 800 | |
| Expression | 355 / 383 | 800 |