用Java编写函数反转字符串

/**
* 反转字符串 演示实例
* 假设有一个字符串 “ABCDEF”，反转后，输出“FEDCBA”
*/
package com.reverse;

/**
* @author snowdream
*
* @since 2012.03.05
*
*/
public class StringReverse {

/**
*
* ReverseString: 利用StringBuffer反转字符串
*
* @param      str  待反转字符串
* @return     String 已反转字符串
*/
public String ReverseString(String str){
StringBuffer mstr = new StringBuffer(str);

System.out.println("Reversed String : "+ mstr.reverse().toString());

return mstr.reverse().toString();
}

/**
*
* ReverseString1: 利用字符数组的方法反转字符串
*
* @param      str  待反转字符串
* @return     String 已反转字符串
*/
public String ReverseString1(String str){
byte[] mchars = str.getBytes();
byte temp = 0;
int length = mchars.length;

for(int i = 0; i < length/2 ;i++){
temp = mchars[i];
mchars[i] = mchars[length -1 -i];
mchars[length -1 -i] = temp;
}

String mstr = new String(mchars);

System.out.println("Reversed String : "+ mstr);

return mstr;
}

/**
* @param args
*/
public static void main(String[] args) {
StringReverse mReverse = new StringReverse();

//String str = "Hello World!";
String str = "你好 中国!";

mReverse.ReverseString(str);

mReverse.ReverseString1(str);

}

}