# Towers of Hanoi

This is a problem set. Some of these are easy, others are far more difficult. The purpose of these problems sets are:

- to build your skill applying computational thinking to a problem
- to assess your knowledge and skills of different programming practices

## Contents

## What is this problem set trying to do[edit]

We are learning about recursion and thinking through a very complex problem

## The Problem[edit]

The Tower of Hanoi is a mathematical game or puzzle. It consists of three rods and a number of disks of different sizes, which can slide onto any rod. The puzzle starts with the disks in a neat stack in ascending order of size on one rod, the smallest at the top, thus making a conical shape.

The objective of the puzzle is to move the entire stack to another rod, obeying the following simple rules:

- Only one disk can be moved at a time.
- Each move consists of taking the upper disk from one of the stacks and placing it on top of another stack or on an empty rod.
- No larger disk may be placed on top of a smaller disk.
- With 3 disks, the puzzle can be solved in 7 moves. The minimal number of moves required to solve a Tower of Hanoi puzzle is 2n − 1, where n is the number of disks.
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## How you will be assessed[edit]

Your solution will be graded using the following axis:

**Scope**

- To what extent does your code implement the features required by our specification?
- To what extent is there evidence of effort?

**Correctness**

- To what extent did your code meet specifications?
- To what extent did your code meet unit tests?
- To what extent is your code free of bugs?

**Design**

- To what extent is your code written well (i.e. clearly, efficiently, elegantly, and/or logically)?
- To what extent is your code eliminating repetition?
- To what extent is your code using functions appropriately?

**Style**

- To what extent is your code readable?
- To what extent is your code commented?
- To what extent are your variables well named?
- To what extent do you adhere to style guide?

## References[edit]

## A possible solution[edit]

Click the expand link to see one possible solution, but NOT before you have tried and failed!

```
not yet!
```

A unit of abstract mathematical system subject to the laws of arithmetic.

Consider the merits or otherwise of an argument or concept. Opinions and conclusions should be presented clearly and supported with appropriate evidence and sound argument.

Produce a plan, simulation or model.