RootOfNumbers

import java.util.Arrays;
import java.util.ArrayList;
import java.util.Scanner;

public class KorenOtChislo {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);

        System.out.print("Input number of elements: ");
        int n = scan.nextInt();

        int[] arr = new int[n];
        ArrayList<Integer> MyList = new ArrayList<>();

        for (int i = 0; i < arr.length; i++) {
            System.out.printf("Input [%d] element: ", i);
            arr[i] = scan.nextInt();
        }
        System.out.print(Arrays.toString(arr));
        System.out.println();

        for (int i = 0; i < arr.length; i++) {
            double koren = Math.sqrt(arr[i]);
            if (koren == (int) koren) {
                MyList.add(arr[i]);
            }
        }
        System.out.println("Elements with root: " + MyList);
    }
}