import java.util.Random;

public class worker {
 public static void main(String[] args) {
 int []nums=new int[101];
 int a = 0, b = 0, c = 0, d = 0, e = 0, f = 0;
 System.out.println("幸运奖获得者是:");
 // 哈希
 while (b != 20)
 {
 a = (int)(Math.random()*99)+1;
 if (nums[a] == 0){
 System.out.println("工号:"+a);
 nums[a]++;
 b++;
 }else{
 System.out.println("重复");
 }
 }
 System.out.println("三等奖获得者是:");
 while (c != 10)
 {
 a = (int)(Math.random()*99)+1;
 if (nums[a] == 0){
 System.out.println("工号:"+a);
 nums[a]++;
 c++;
 }else{
 System.out.println("重复");
 }
 }
 System.out.println("二等奖获得者是:");
 while (d != 7)
 {
 a = (int)(Math.random()*99)+1;
 if (nums[a] == 0){
 System.out.println("工号:"+a);
 nums[a]++;
 d++;
 }else{
 System.out.println("重复");
 }
 }
 System.out.println("一等奖获得者是:");
 while (e != 2)
 {
 a = (int)(Math.random()*99)+1;
 if (nums[a] == 0){
 System.out.println("工号:"+a);
 nums[a]++;
 e++;
 }else{
 System.out.println("重复");
 }
 }
 System.out.println("特等奖获得者是:");
 while (f != 1)
 {
 a = (int)(Math.random()*99)+1;
 if (nums[a] == 0){
 System.out.println("工号:"+a);
 nums[a]++;
 f++;
 }else{
 System.out.println("重复");
 }
 }
 }
}