java 数组 的 应用【班级选举系统】

/***author:kevin*date :2011-7-19*version 1.0*function:【班级选举系统】：输入 参与投票人数 和 需要 选出人数，系统随机生产 选出人员编号*discussion:存在重复输出情况*/package com.day5;

import java.util.Scanner;

public class Demo {

public static void main(String[] args) {Scanner s = new Scanner(System.in);try {int len = 0;System.out.println("请输入参与人数：");len = s.nextInt();int[] arr = new int[len];for (int i = 0; i < len; i++) {int t = (int) (Math.random() * len);arr[i] = t;}

System.out.println("请抽出人数：");int out = s.nextInt();System.out.print("抽出人员编号为：\n");

for (int i = 0; i < out; i++) {System.out.print((arr[i] + 1) + " ");}} catch (Exception e) {e.printStackTrace();}finally{s.close();}}

}