String
Problems
| Length | 1401 / 1412 | 800 | |
| Word Count | 1265 / 1312 | 800 | |
| lowercase | 1250 / 1267 | 800 | |
| Vowel | 1173 / 1193 | 800 | |
| Digit sum | 1172 / 1197 | 800 | |
| Strong password | 1130 / 1151 | 800 | |
| Letter frequencies | 1039 / 1048 | 800 | |
| Palindrome string | 1085 / 1090 | 800 | |
| Palindrome substring | 862 / 891 | 800 | |
| Caesar cipher | 829 / 902 | 800 | |
| String occurences | 870 / 888 | 800 | |
| Sum | 763 / 844 | 800 | |
| String normalization | 765 / 838 | 800 | |
| Run-length encoding | 684 / 777 | 800 | |
| Expression | 507 / 541 | 800 |