Java 其中翻转字符串的实现方法

给大家介绍其中常用和不常用的将字符串翻转过来的方法：

import java.util.stack;

public class stringreverse {

public static string reverse1(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 reverse1(right) + reverse1(left);

 }

 public static string reverse2(string s) {

   int length = s.length();

   string reverse = "";

   for (int i = 0; i < length; i++)

    reverse = s.charat(i) + reverse;

   return reverse;

  }

  public static string reverse3(string s) {

   char[] array = s.tochararray();

   string reverse = "";

   for (int i = array.length - 1; i >= 0; i--)

    reverse += array[i];

   return reverse;

  }

  public static string reverse4(string s) {

   return new stringbuffer(s).reverse().tostring();

  }

  public static string reverse5(string orig) {

   char[] s = orig.tochararray();

   int n = s.length - 1;

   int halflength = n / 2;

   for (int i = 0; i <= halflength; i++) {

    char temp = s[i];

    s[i] = s[n - i];

    s[n - i] = temp;

   }

   return new string(s);

  }

  public static string reverse6(string s) {

   char[] str = s.tochararray();

   int begin = 0;

   int end = s.length() - 1;

   while (begin < end) {

    str[begin] = (char) (str[begin] ^ str[end]);

    str[end] = (char) (str[begin] ^ str[end]);

    str[begin] = (char) (str[end] ^ str[begin]);

    begin++;

    end--;

   }

   return new string(str);

  }

  public static string reverse7(string s) {

   char[] str = s.tochararray();

   stack<character> stack = new stack<character>();

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

    stack.push(str[i]);

   string reversed = "";

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

    reversed += stack.pop();

   return reversed;

  }

 }