Valid Anagram 带测试版

    public  class Main {  public static boolean isAnagram(String s, String t)     {        int[] ch=new int[26];        for(char c:s.toCharArray())        {            int position=c-'a';            ch[position]++;        }        for(char c:t.toCharArray())        {            int position=c-'a';            ch[position]--;        }        for(int c:ch)        {            if(c!=0)                return false;        }        return true;    }public static void main(String []args){    String s="as";    String t="sa";    boolean a=isAnagram(s,t);    System.out.println(a);}}