[자바] 겹치지 않는 랜덤 숫자 뽑아내기(Random)

 

import java.util.Random;

public class Main {
    public static void main(String[] args) {
        Random rand = new Random();
//        int i = rand.nextInt(10);
//        System.out.println(i);
        int N = 10;
        int nums[] = new int[N];

        for(int j=0; j<N; /*j++*/) {
            int i = rand.nextInt(10);
//            System.out.println(i);
            if(j==0) {
                nums[j]=i;
                j++;
            }
            else {
                int k;
                for(k=0; k<j; k++) {
                    if(nums[k]==i) {
                        break;
                    }
                }
                if(k == j) {
                    nums[j] = i;
                    j++;
                }
            }
        }
        System.out.println();
        for(int j=0; j<N; j++)
            System.out.println(nums[j]);
    }
}