字符串操作

字符串操作：把一个英文中单词的次序颠倒后输出。例如程序的输入时“how are you "，则返回” you are how“

import java.util.Scanner;

public class Y{               public static void main(String[] args) {                        Scanner input = new Scanner(System.in);//Scannd输入命令                        System.out.print("请输入英文：");                        String str = input.nextLine(); //输入字符串                        String[] strArr = str.split("\\s+|[,]");   //将输入的字符串转换成数组                        StringBuffer result = new StringBuffer();                        for(int i = strArr.length -1;i >=0; i--){      //逆序输出数组                                result.append(strArr[i] + " ");                        }                        result.setCharAt(str.length()-3, ‘ ‘);                       System.out.println("颠倒顺序后的结果为："+result.toString());//打印输出结果           }

}

该程序是运用正则表达式实现的效果。

字符串操作

原文：http://www.cnblogs.com/wangrongrong/p/4480410.html