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
Nonogram#6957
Easy
Magic Multiple#6975
Medium
Terusky#7111
Very easy
Cryptogram#7199
Very hard
A Jaw-dropping Problem#7388
Very easy
Easy#7440
Easy
Palindrome#7445
Very hard
Substrings#7490
Very hard
Repeated Substrings#7530
Very hard
Legacy Code#7713
Medium
Ramp Number#8177
Medium
The length of the substring#8222
Very easy
Prefixes of a substring#8223
Very easy
Suffixes of a substring#8224
Very easy
Sample in the text#8225
Very easy
Facets of the string#8230
Very easy
Line block#8231
Very easy
Two lines#8232
Easy
Retweet twinter#8268
Medium
Title String#8320
Very easy