String
Problems
| Length | 1550 / 1562 | 800 | |
| Word Count | 1396 / 1451 | 800 | |
| lowercase | 1374 / 1395 | 800 | |
| Vowel | 1299 / 1321 | 800 | |
| Digit sum | 1297 / 1323 | 800 | |
| Strong password | 1241 / 1264 | 800 | |
| Letter frequencies | 1145 / 1155 | 800 | |
| Palindrome string | 1194 / 1200 | 800 | |
| Palindrome substring | 947 / 979 | 800 | |
| Caesar cipher | 923 / 999 | 800 | |
| String occurences | 954 / 974 | 800 | |
| Sum | 833 / 919 | 800 | |
| String normalization | 838 / 913 | 800 | |
| Run-length encoding | 749 / 847 | 800 | |
| Expression | 560 / 597 | 800 |