博客

 //方法一：
        Boolean bo = true;
        String s1 = "absc", s2 = "bcda";
        System.out.println(new Date()+"===========开始111========="+System.currentTimeMillis());
        if(s1.length() != s1.length()){
            bo = false;
        }
        char[] chars = s2.toCharArray();
        List<String> list = new ArrayList<>();
        for (int i = 0; i < s2.toCharArray().length; i++) {
            list.add(s2.toCharArray()[i]+"");
        }


        for (int i = 0; i < s1.toCharArray().length; i++) {
            if(!list.contains(s1.toCharArray()[i]+"")){
                bo = false;
            }
        }
        System.out.println(bo);
        System.out.println(new Date()+"===========结束22222========="+System.currentTimeMillis());
        //方法二：
        System.out.println(new Date()+"===========开始========="+System.currentTimeMillis());
        // 将字符串转换成字符数组
        char[] s1Chars = s1.toCharArray();
        char[] s2Chars = s2.toCharArray();
        // 对字符数组进行排序
        Arrays.sort(s1Chars);
        Arrays.sort(s2Chars);
        // 再将字符数组转换成字符串，比较是否相等



        System.out.println(new String(s1Chars).equals(new String(s2Chars)));
        System.out.println(new Date()+"===========结束========="+System.currentTimeMillis());


```由运行结果可以看出虽然两种方式速度都挺快但是第二种方式还是快了一点
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