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- import java.util.Scanner;
- import java.util.Random;
- import java.util.Arrays; // convert arrays to string
- import java.util.HashSet;
- public class Lab {
- public static void main(String[] args) {
- Scanner scan = new Scanner(System.in);
- Random random = new Random();
- System.out.print("Enter amount of numbers in array: ");
- int amountOfNumbers = scan.nextInt();
- int[] array = new int[amountOfNumbers];
- HashSet<Integer> set = new HashSet<Integer>();
- for (int i = 0; i < amountOfNumbers; i++) {
- array[i] = random.nextInt(50); // Randomly fill the array
- // OR
- // array[i] = scan.nextInt(); // Enter integers manually
- }
- System.out.println("Array: " + Arrays.toString(array));
- System.out.print("Duplicates: ");
- for (int num : array) {
- if (set.add(num) == false)
- System.out.print(num + " ");
- }
- }
- }
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