PROBLEM Given two strings s and p, return an array of all the start indices of p’s anagrams in s. You may return the answer in any order. An Anagram is a word or phrase formed by rearranging the letters of a different word or phrase, typically using all the original letters exactly once. Example 1 *Input*: s = "cbaebabacd", p = "abc" *Output*: [0,6] *Explanation*: The substring with start index = 0 is "cba", which is an anagram of "abc".