Detailed explanation coming soon!
import java.util.*;
public class Solution {
public static void main(String[] args){
Scanner in = new Scanner(System.in);
int n = in.nextInt();
int[] freq = new int[1001];
for(int i = 0; i < n; i++){
freq[in.nextInt()]++;
}
for(int i = 0; i < freq.length; i++){
if(freq[i] != 0){
System.out.println(n);
n -= freq[i];
}
}
}
}
Questions? Have a neat solution? Comment below!