Java发红包，输入红包金额及发放的人数，随机为每人发红包，并输出每个人的红包金额。

import java.text.NumberFormat;
import java.util.Locale;
import java.util.Scanner;

public class Money {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		System.out.println("请输入要发送的红包金额：");
		double money = sc.nextDouble();
		System.out.println("请输入抢红包的人数：");
		int nums = sc.nextInt();
		NumberFormat nf = NumberFormat.getCurrencyInstance(Locale.CHINA);
		if (money <= 0 || nums <= 0) {
			System.out.println("输入 有误！！！");
		} else {
			if (nums == 1) {
				System.out.println("抢到的红包为 ：" + nf.format(money));
			} else {
				if ((money / nums) > 0.01) {
					double temp=0;
					for (int i = 0; i < nums-1; i++) {
						temp = Math.random()*(money-(0.01*(nums-i+2))) + 0.01;
						money=money-temp;
						System.out.println("第" + (i+1) + "个人抢到："+nf.format(temp));
					}
					System.out.println("第"+nums+"个人抢到："+nf.format(money));
				} else if ((money / nums) == 0.01) {
					for (int i = 0; i < nums; i++) {
						System.out.println("第" + (i + 1) + "个人抢到：￥" + 0.01);
					}
				} else {
					System.out.println("金额输入有误，请重新输入！");
				}
			}
		}
	}
}