import java.io.*; import java.util.*; public class Fr{ public static void main(String[] args) { HashMap hm = new HashMap<>(); int a[] = {2,3,2,3,5}; int n = 5; int p = 5; for(int i = 1; i <=n; i++){ hm.put(i,0); } for(int val:a){ if(hm.containsKey(val)){ int of = hm.get(val); int nf = of+1; hm.put(val,nf); } else{ hm.put(val,1); } } System.out.println(hm.get(1)); System.out.println(hm); } }