Given two strings `s` and `p`, return all the start indices of `p`'s anagrams in `s`. An Anagram is a word formed by rearranging the letters of another word. 1. Generate all substrings of length ...

Strings are immutable: their value cannot be changed after they are created. When created using String s = "something" they are stored in a special pool in which the same string is stored only once. / ...