软件大赛题目----（第七个）反转字符串

package com.bird.software;

/**
 * 
 * @author Bird
 *
 */
public class Test7 {
	public static void main(String [] args){
		System.out.println(reverseString("abcdefg"));
	}
	
	
	public static String reverseString(String x){
		if(x == null || x.length() < 2) return x;
		return reverseString(x.substring(1, x.length()))+ x.charAt(0);
	}
}

gfedcba