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Solution: Find All Anagrams in a String

Explore how to identify all starting positions of anagrams of one string within another using a sliding window approach and hash maps. Understand how character counts are tracked and compared to detect anagrams efficiently. This lesson helps you implement a solution with optimal time and space complexity for common string manipulation problems.

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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