String
Problems
| Length | 1162 / 1170 | 800 | |
| Word Count | 1041 / 1079 | 800 | |
| lowercase | 1035 / 1048 | 800 | |
| Vowel | 969 / 985 | 800 | |
| Digit sum | 975 / 995 | 800 | |
| Strong password | 945 / 962 | 800 | |
| Letter frequencies | 878 / 886 | 800 | |
| Palindrome string | 913 / 918 | 800 | |
| Palindrome substring | 733 / 756 | 800 | |
| Caesar cipher | 703 / 771 | 800 | |
| String occurences | 750 / 766 | 800 | |
| Sum | 651 / 721 | 800 | |
| String normalization | 646 / 714 | 800 | |
| Run-length encoding | 588 / 679 | 800 | |
| Expression | 424 / 454 | 800 |