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Solution: Find All Anagrams in a String

Explore how to identify all start indexes of anagrams of one string within another by applying sliding window techniques and hash maps for efficient frequency analysis. Understand how to compare character counts to detect anagrams, optimize with constant space complexity, and implement this solution in C++.

Statement

Given two strings, a and b, return an array of all the start indexes of anagrams of b in a. We may return the answer in any order.

An anagram is a word or phrase created by rearranging the letters of another word or phrase while utilizing each of the original letters exactly once. For example, “act” is the anagram of “cat”, and “flow” is the anagram of “wolf”.

Constraints:

  • 11\leq a.length, b.length 103\leq 10^3
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