import java.util.*;
 
public class Main {
    public static void main(String[] args) {
        int[] arr1 = {6, 7, 3, 2};
        int[] arr2 = {2, 3};
        int n1 = arr1.length, n2 = arr2.length;
 
        Set<Integer> st = new HashSet<>();
        for (int i = 0; i < n1; ++i) {
            st.add(arr1[i]);
        }
 
        for (int i = 0; i < n2; ++i) {
            if (!st.contains(arr2[i])) {
                System.out.println("Arr2 is not a subset of Arr1");
                return;
            }
        }
        System.out.println("Arr2 is a subset of Arr1");
    }
}
 

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