Question

Write a while loop that prints userNum divided by 2 (integer division) until reaching 1. Follow each number by a space. Example output for userNum = 40:

20 10 5 2 1

Note: These activities may test code with different test values. This activity will perform four tests, with userNum = 40, then with userNum = 2, then with userNum = 0, then with userNum = -1. See "How to Use zyBooks".

Also note: If the submitted code has an infinite loop, the system will stop running the code after a few seconds, and report "Program end never reached." The system doesn't print the test case that caused the reported message.

import java.util.Scanner;

public class DivideByTwoLoop {
public static void main (String [] args) {
Scanner scnr = new Scanner(System.in);
int userNum;

userNum = scnr.nextInt();

*insert code*

System.out.println("");
}
}

Answer 1

import java.util.Scanner;

public class DivideByTwoLoop {
    public static void main(String[] args) {
        Scanner scnr = new Scanner(System.in);
        int userNum;

        userNum = scnr.nextInt();
        while (userNum > 1) {
            System.out.print((userNum / 2) + " ");
            userNum /= 2;
        }
        System.out.println("");
    }
}