HW5.22

 import java.util.Scanner;

 public class Solution
 {
     public static void main(String[] args)
     {
         Scanner input = new Scanner(System.in);
         System.out.print("Enter a number to calculate the sqrt: ");
         double number = input.nextDouble();

         input.close();

         System.out.println("The sqrt is " + sqrt(number));
     }

     public static double sqrt(double number)
     {
         double lastGuess = 1;
         double nextGuess = (lastGuess + (number / lastGuess)) / 2;

         while(Math.abs(nextGuess - lastGuess) > 0.0001)
         {
             lastGuess = nextGuess;
             nextGuess = (lastGuess + (number / lastGuess)) / 2;
         }

         return nextGuess;
     }
 }