String
Problems
| Length | 1569 / 1581 | 800 | |
| Word Count | 1413 / 1468 | 800 | |
| lowercase | 1391 / 1412 | 800 | |
| Vowel | 1315 / 1337 | 800 | |
| Digit sum | 1312 / 1338 | 800 | |
| Strong password | 1256 / 1279 | 800 | |
| Letter frequencies | 1160 / 1170 | 800 | |
| Palindrome string | 1209 / 1215 | 800 | |
| Palindrome substring | 959 / 991 | 800 | |
| Caesar cipher | 939 / 1016 | 800 | |
| String occurences | 968 / 988 | 800 | |
| Sum | 852 / 938 | 800 | |
| String normalization | 847 / 924 | 800 | |
| Run-length encoding | 756 / 855 | 800 | |
| Expression | 565 / 602 | 800 |