String
Problems
| Length | 1835 / 1850 | 800 | |
| Word Count | 1664 / 1723 | 800 | |
| lowercase | 1640 / 1662 | 800 | |
| Vowel | 1561 / 1586 | 800 | |
| Digit sum | 1559 / 1585 | 800 | |
| Strong password | 1491 / 1521 | 800 | |
| Letter frequencies | 1366 / 1378 | 800 | |
| Palindrome string | 1439 / 1447 | 800 | |
| Palindrome substring | 1148 / 1186 | 800 | |
| Caesar cipher | 1123 / 1201 | 800 | |
| String occurences | 1149 / 1172 | 800 | |
| Sum | 1007 / 1104 | 800 | |
| String normalization | 1007 / 1095 | 800 | |
| Run-length encoding | 910 / 1025 | 800 | |
| Expression | 701 / 740 | 800 |