---
title: Towers of Hanoi
id: 5951ed8945deab770972ae56
challengeType: 5
videoUrl: ''
localeTitle: ''
---

## Description
undefined

## Instructions
undefined

## Tests
<section id='tests'>

```yml
tests:
  - text: ''
    testString: 'assert(typeof towerOfHanoi === "function", "<code>towerOfHanoi</code> is a function.");'
  - text: ''
    testString: 'assert(res3.length === 7, "<code>towerOfHanoi(3, ...)</code> should return 7 moves.");'
  - text: ''
    testString: 'assert.deepEqual(towerOfHanoi(3, "A", "B", "C"), res3Moves, "<code>towerOfHanoi(3, "A", "B", "C")</code> should return [["A","B"],["A","C"],["B","C"],["A","B"],["C","A"],["C","B"],["A","B"]].");'
  - text: ''
    testString: 'assert.deepEqual(res5[9], ["Y", "X"], "<code>towerOfHanoi(5, "X", "Y", "Z")</code> 10th move should be Y -> X.");'
  - text: ''
    testString: 'assert.deepEqual(towerOfHanoi(7, "A", "B", "C").slice(0, 10), res7First10Moves, "<code>towerOfHanoi(7, "A", "B", "C")</code> first ten moves are [["A","B"],["A","C"],["B","C"],["A","B"],["C","A"],["C","B"],["A","B"],["A","C"],["B","C"],["B","A"]].");'

```

</section>

## Challenge Seed
<section id='challengeSeed'>

<div id='js-seed'>

```js
function towerOfHanoi (n, a, b, c) {
  // Good luck!
  return [[]];
}

```

</div>


### After Test
<div id='js-teardown'>

```js
console.info('after the test');
```

</div>

</section>

## Solution
<section id='solution'>

```js
// solution required
```
</section>