使用java简单模仿抢红包功能

来源：互联网发布：linux安装eclipse教程编辑：程序博客网时间：2024/04/30 16:58
import java.math.BigDecimal;import java.util.Scanner;/** * 抢红包 * @author 123 * */public class Money {public static void main(String[] args) {System.out.println("请输入红包金额：（例如2.5元）");Scanner scanner=new Scanner(System.in);double f = scanner.nextDouble();if(f<0.01){System.err.println("金额最少为0.01元");main(args);}else{    BigDecimal b=new BigDecimal(f);double f1=b.setScale(2,BigDecimal.ROUND_HALF_UP).doubleValue();System.out.println(f1);int total=(int)(f1*100);System.out.println("请输入红包个数：");int num=scanner.nextInt();int num2=num;if(num<1){System.err.println("红包个数不能小于1");}else if(f<num*0.01){System.err.println("请保证每个红包的金额不少于0.01");main(args);}else{int[] money=new int[num];if(num==1){money[0]=total;}for(int i=0;i<money.length-1;i++){money[i]=((int)(Math.random()*((int)total/num))+1);total-=money[i];num--;if(i==money.length-2){money[money.length-1]=total;}}for(int i=0;i<num2;i++){System.out.println("----");String y=(money[i]/100+"");//元int j=(money[i]-money[i]/100*100-money[i]%10);String ff=(money[i]%10+"");//分String jf=null;if(j==0){jf="0".concat(ff);}else{jf=(money[i]-money[i]/100*100-money[i]%10+money[i]%10+"");//角+分}String mm=y.concat(".").concat(jf);System.out.println("红包"+(i+1)+":"+mm+"元");}}}}}
0 0