CS106A: Assignment 2.6 - Hailstone Sequence

Hailstone

/*
 * File: Hailstone.java
 * Name: 
 * Section Leader: 
 * --------------------
 * This file is the starter file for the Hailstone problem.
 */

import acm.program.*;

public class Hailstone extends ConsoleProgram {
	public void run() {
		askUserInput();
		computeSequence();
		displayStepNumber();
		playAgain();
	}
	
	int n = 1;
	
	private void askUserInput() {
		n = readInt("Enter a number: ");
	}
	
	int i = 0;
	
	private void computeSequence() {
		while (n != 1) {
			if ((n % 2) == 0) {
				int nHalf = n / 2;
				println (""+n+" is even, so I take half: "+nHalf+"");
				n = nHalf;
				i++;
			} else {
				int nOddOperation = n * 3 + 1;
				println(""+n+" is odd, so I make 3n + 1: "+nOddOperation+"");
				n = nOddOperation;
				i++;
			}
		}
	}
	
	private void displayStepNumber() {
		println("The process took "+i+" steps to reach 1.");
	}
	
	private void playAgain() {
		int y = readInt("Enter 1 if you would like to play again... ");
		if (y == 1) {
			run();
		}
	}
}