Question

Using Java loops

Write a program that finds all the perfect squares and
cubes of numbers from 1 to a number entered by the
user.

If the number it is examining is a perfect square, it
prints the number user followed by “ is a perfect
square”

If the number it is examining is a perfect cube, it
prints the number user followed by “ is a perfect
cube”

Answer 1

import java.util.Scanner;

public class PerfectSquaresCubes {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        System.out.print("Enter a max value: ");
        int n = in.nextInt();
        for (int i = 2; i <= n; i++) {
            for (int j = 2; j <= n; j++) {
                if (j*j == i) {
                    System.out.println(i + " is a perfect square");
                }
                if (j*j*j == i) {
                    System.out.println(i + " is a perfect cube");
                }
            }
        }
    }
}