Strings
Problems on strings, including searching for a substring, palindromes, anagrams, comparing and sorting strings, parsing and transforming text, counting characters and words, and string periods.
Narrower problem sets are under Prefix function, Z-function, Hashing and String suffix structures.
Problems
Secret — MAX#2560
Very hard
Numbersrebmun#2644
Very easy
Just add commas#2654
Very hard
Text Editor#2689
Easy
Palindrome#2709
Easy
Repetition#2718
Medium
Cipher#2728
Hard
ClosedCup#2736
Medium
User Names#2757
Medium
Square palindrome#2767
Medium
Game#2785
Easy
Damaged XML#2790
Medium
Period of words#2882
Medium
PreQueL#2887
Hard
Glass Beads#2912
Very easy
Substrings with Shift#2962
Very hard
Euphony#3009
Medium
Electronic Document Security#3024
Very easy
Mutation#3036
Easy
Roll Call#3045
Easy
Minimal Matrix#3075
Medium