Contains Duplicateeasy

import java.util.*;

public class Main {
    public static boolean containsDuplicate(int[] nums) {
        // TODO: return true if any value appears more than once
        return false;
    }

    public static void main(String[] args) {
        System.out.println(containsDuplicate(new int[]{1, 2, 3, 1})); // true
        System.out.println(containsDuplicate(new int[]{1, 2, 3, 4})); // false
    }
}