Java Array: Largest, Smallest, Search, Sort, Find Duplicates

import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

public class ArrayHandler {
    public static void main(String[] args) {
        int[] numbers = {5, 3, 9, 1, 5, 7, 2, 1, 8, 4, 6, 1};
        System.out.println("Find largest and smallest in an array:");
        findLargestAndSmallest(numbers);
       System.out.println("\nSearch element in an array:");
        int target = 17;
        System.out.println("Is " + target + " present? " + searchElement(numbers, target));
        System.out.println("\nSort elements in an array:");
        sortArray(numbers);
        System.out.println("\nHow to find duplicates in an array or list:");
        findDuplicates(numbers);
    }
    // Find largest and smallest in an array
    public static void findLargestAndSmallest(int[] array) {
        Arrays.sort(array);
        int smallest = array[0];
        int largest = array[array.length - 1];
        System.out.println("Smallest: " + smallest);
        System.out.println("Largest: " + largest);
    }
    // Search element in an array
    public static boolean searchElement(int[] array, int target) {
        for (int num : array) {
            if (num == target) {
                return true;
            }
        }
        return false;
    }
    // Sort elements in an array
    public static void sortArray(int[] array) {
        Arrays.sort(array);
        System.out.println("Sorted Array: " + Arrays.toString(array));
    }
    // How to find duplicates in an array or list
    public static void findDuplicates(int[] array) {
    	// A Set is a collection that does not allow duplicate elements. 
    	Set uniqueSet = new HashSet<>();
        Set duplicates = new HashSet<>();

        for (int num : array) {
            // If the element's already present, uniqueSet.add(num) returns false, meaning that it's a duplicate.
        	if (!uniqueSet.add(num)) {
                duplicates.add(num);
            }
        }
        System.out.println("Duplicate elements: " + duplicates);
    }

}

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