CHALLENGE 4.2.3: Basic while loop expression 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 userum-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 1 import java.util.Scanner; 1 test passed 3 public class DivideBy TwoLoop int userNum; userNum 40; 4 public static void main (String [] args) All tests passed while (userNum