String
Problems
| Length | 1179 / 1189 | 800 | |
| Word Count | 1057 / 1095 | 800 | |
| lowercase | 1052 / 1065 | 800 | |
| Vowel | 988 / 1005 | 800 | |
| Digit sum | 994 / 1014 | 800 | |
| Strong password | 960 / 977 | 800 | |
| Letter frequencies | 892 / 900 | 800 | |
| Palindrome string | 927 / 932 | 800 | |
| Palindrome substring | 744 / 768 | 800 | |
| Caesar cipher | 713 / 782 | 800 | |
| String occurences | 761 / 778 | 800 | |
| Sum | 662 / 734 | 800 | |
| String normalization | 657 / 725 | 800 | |
| Run-length encoding | 593 / 684 | 800 | |
| Expression | 428 / 458 | 800 |