How to realize effective letter ectopic words

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Given two strings s and t, write a function to determine whether t is a letter heterotopic of s. example

Example 1: Input: s = "anagram", t = "nagaram" Output: true Example 2: Input: s = "rat", t = "car" Output: false Note: You can assume that the string contains only lowercase letters.

problem-solving

Method 1: Hash map only lowercase letters can create an array of length 26, traverse s and t, while adding s, while subtracting t, if s and t are letter heterotopic words, then the final array which bit is 0.

class Solution { public boolean isAnagram(String s, String t) { if(s.length()!= t.length()){ return false; } int[] zi=new int[26]; for(int i=0;i