class Solution {
    public boolean isAnagram(String s, String t) {
            int[] a = new int[128];
            int[] b = new int[128];
            for(char c:s.toCharArray()){
                a[c]++;
            }
            for(char c:t.toCharArray()){
                b[c]++;
            }
            for(int i = 0 ;i < 128;i++)
            {
                if(a[i]!=0||b[i]!=0)
                {
                    if(a[i]!=b[i])
                    return false;
                }
            }
            return true;
    }
}