Question

Leur that repest a Post ve integer as pipit te the number is even, suide it by 2 tt not, mutip the wmber by 3 and then add t Repaat ts poces wth the resuling number and tomtne rependhng onil the 1 Heached the 土 ls reached, e program should display 丬he number of iterations repind 40each tke number 1 When the pgmam reperts inpot, tshaul check thai the user lpuis a posergaer Han A. f o an emer messa ge should be genenaled.

Answer 1

import java.util.Scanner;
public class Test {
   public static void main(String args[]){
       Scanner keyboard = new Scanner(System.in);
       System.out.println("enter an integer");
       int i = 0;
       int num = keyboard.nextInt();
       if (num<=1)
           System.out.println("Error: Number is less than or equal to 1");
       else
           while(num!=1){ ++i;
               if(num%2==0)
                   num=num/2;
               else
                   num = num * 3 + 1;
           }
       System.out.println(i + " Number of Iterations");
   }

}

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