Java 練習：字元串反轉

package com.swift;

public class String_Reverse_Test {

    public static void main(String[] args) {
        /*
         * 字元串反轉
         */
        String str="abcdefghijklmn";
        System.out.println(str);
        
        char[] c_qian=str.toCharArray();
        char[] c_hou=new char[c_qian.length];
        for(int i=0;i<c_qian.length;i++) {
            c_hou[c_qian.length-1-i]=c_qian[i];
        }
        
        String str_fan=String.valueOf(c_hou);
        System.out.println(str_fan);
    }

}