1.3---字符串重新排列后是否能够变成另一个字符串（CC150）

import java.util.*;

public class Same {

    public boolean checkSam(String str1, String str2) {

        // write code here

            if(str1.length() != str2.length()) return false;

        StringBuffer sb1 = new StringBuffer(str1);

        StringBuffer sb2 = new StringBuffer(str2);

        for(int i = 0; i < str1.length(); i++){

            int tmp = sb2.indexOf(sb1.substring(i, i+1));

            if(tmp == -1) return false;

            sb2.deleteCharAt(tmp);

        }

        if(sb2.length() == 0) return true;

        return false;

    }

}