https://github.com/waterlink/challenge-build-your-own-array-in-js

This is a challenge that will allow you to practice your logical, analytical and problem-solving skills. Additionally, by the end of it you’ll have much better command of arrays in javascript.
https://github.com/waterlink/challenge-build-your-own-array-in-js

challenge javascript vanilla-js

Last synced: 12 days ago
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This is a challenge that will allow you to practice your logical, analytical and problem-solving skills. Additionally, by the end of it you’ll have much better command of arrays in javascript.

• Host: GitHub
• URL: https://github.com/waterlink/challenge-build-your-own-array-in-js
• Owner: waterlink
• License: mit
• Created: 2017-11-26T15:12:49.000Z (almost 7 years ago)
• Default Branch: master
• Last Pushed: 2021-01-26T21:39:42.000Z (almost 4 years ago)
• Last Synced: 2024-10-16T07:16:00.138Z (28 days ago)
• Topics: challenge, javascript, vanilla-js
• Language: JavaScript
• Size: 483 KB
• Stars: 177
• Watchers: 7
• Forks: 31
• Open Issues: 9
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Challenge “Build Your Own Array in Javascript!”

Rules are simple:

- I give you a test suite for (almost) all the functionality of the array.

- You implement that functionality in the class `MyArray`.

- You can’t use standard javascript’s `Array`, instead you need to use the provided wrapper `PlainArray` that limits what you can do:

```typescript

class PlainArray {

    constructor(capacity: number)

    length: number

    get(index: number): T

    set(index: number, value: T)

}

```

- `PlainArray` is a fixed-size array that has one property and two methods defined: `length, get(index) and set(index, value)`.

- Even though the definition of that class is in Typescript, you will have to use vanilla ECMA Script 5.

- Focus more on readability over the performance.

## How to Run The Test Suite?

First, you’ll need to clone this repository:

```bash

$ git clone https://github.com/waterlink/Challenge-Build-Your-Own-Array-In-Js

$ cd Challenge-Build-Your-Own-Array-In-Js

```

You will need to open [`SpecRunner.html`](./SpecRunner.html) in your browser. You can launch it from the directory in your file explorer, or you could run it from terminal:

```bash

# Mac OS X:

$ open ./SpecRunner.html

# Most Linuxes

$ xdg-open ./SpecRunner.html

```

You should see something like that:

![](./img/everything-fails-in-the-browser.png)

To see the test suite open [`./spec/MyArraySpec.js`](./spec/MyArraySpec.js) and start making these failing tests pass one by one.

I recommend starting with the top ones, as they get harder towards the bottom.

## Why?

So that you can practice your logical and problem-solving skills. 

Additionally, by the end of this challenge, you’ll have much more mastery over the use of arrays in javascript.

## I’m Done. Now What?

Send me a pull request to this GitHub repository. And take a look at everyone else’s solution, as well!

Just don’t peek before you are done ;)

## Thank you!