public static int getRandom(int[] num){
int n = (int)(9 * Math.random() + 1);
for(int i = 0; i < num.length; i++){
if(n == num[i])
n = getRandom(num);
}
return n;
}
public static void main(String[] args){
int n = 5;
int num[] = new int[n];
for(int i = 0; i < n; i++){
System.out.println(num[i] = getRandom(num));
}
}