java字符串反转的7种方法

目录

1、用stringbuffer或者stringbuilder自带的rever方法

  public static string revertestone(string s) {    return new stringbuffer(s).rever().tostring();  }

2、将字符串拆分为char数组

    public static string revertesttwo(string s) {        char[] chararray = s.tochararray();        int start = 0, end = chararray.length - 1;        for (; start < end; start++, end--) {            char班干部有哪些array[start] ^= chararray[end];//采用异或            chararray[end] ^= chararray[start];            chararray[start] ^= chararray[end];        }        return new string(chararray);    }

两数交换除了用异或还能用其他方法，请移步

3、stringbuffer倒序拼接

    public static string revertestthree(string s) {        stringbuffer sb = new stringbuffer();        for (int i = s.length() - 1; i >= 0; i--) {            sb.append(s.charat(i));        }        return sb.tostring();    }

4、利用栈的先进后出

    public static string revertestfour(string s) {        stringbuffer sb = new stringbuffer();        stack stack = new stack();        for (int i = 0; i < s.length(); i++) {            stack.push(s.charat(i));        }        while (!stack.impty()) {   考研流程         //stack会返回栈顶值，并且会把该值删除            sb.append(stack.pop());        }        return sb.tostring();    } 

5、二分换位反转

    public static string revertestfive(string s) {        int start = 0;        int end = s.length() - 1;       我选的天空 char[] chararray = s.tochararray();        while (start < end) {            //交换首尾char值            char c = chararray[end];            chararray[end] = chara分异rray[start];            chararray[start] = c;            start++;            end--;        }        return new string(chararray);    }

6、切割递归反转

    public static string revertestsix(string s) {        if (s.length() <= 1) {            return s;        }        return revertestsix(s.substring(1)) + 早教产品s.substring(0, 1);    }

7、二分递归反转

    public static string revertestven(string s) {        int length = s.length();        if (length <= 1) return s;        string left = s.substring(0, length / 2);        string right = s.substring(length / 2, length);        return revertestven(right) + revertestven(left);    }

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