抽奖程序

抽奖程序
'package choujiang;

import java.util.ArrayList;
import java.util.Collections;
import java.util.Random;

public class choujiang {

public static void main(String[] args) {
	ArrayList <Integer> number = new ArrayList<>();
	Random random = new Random();
	
	for(int i=0;i<1000;i++){
		int A=i;
		number.add(A);
	}
	Collections.shuffle(number);
	int A = random.nextInt(1000);
	System.out.println("一等奖" +number.get(A)+"
" );
	number.remove(A);
	for(int i=1;i<3;i++){
		Collections.shuffle(number);
		int B = random.nextInt(1000-i);
		System.out.println("二等奖" +number.get(B)+"
");
		number.remove(B);
	}

	for(int i=1;i<4;i++){
		Collections.shuffle(number);
		int C = random.nextInt(997-i);
		System.out.println("三等奖" +number.get(C)+"
");
		
	}


}

}
'
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