String
Problems
| Length | 1034 / 1041 | 800 | |
| Word Count | 927 / 962 | 800 | |
| lowercase | 923 / 935 | 800 | |
| Vowel | 863 / 878 | 800 | |
| Digit sum | 870 / 888 | 800 | |
| Strong password | 841 / 857 | 800 | |
| Letter frequencies | 778 / 785 | 800 | |
| Palindrome string | 813 / 818 | 800 | |
| Palindrome substring | 637 / 662 | 800 | |
| Caesar cipher | 609 / 679 | 800 | |
| String occurences | 659 / 675 | 800 | |
| Sum | 565 / 629 | 800 | |
| String normalization | 568 / 628 | 800 | |
| Run-length encoding | 506 / 596 | 800 | |
| Expression | 347 / 375 | 800 |