import java.util.Scanner;
public class Collatz
{
public static void main( String[] args )
{
Scanner keyboard = new Scanner(System.in);
int loops = 0;
System.out.print("Starting number: ");
int value = keyboard.nextInt();
System.out.print(value+ "\t");
while (value > 1)
{
if (value%2 == 0)
{
value = value/2;
}
else
{
value = value*3+1;
}
loops ++;
System.out.print(value+ "\t");
}
System.out.println("\nSequence finished after " +loops+ " steps.");
}
}