style: lint ignore and .md files

.github/CONTRIBUTING.md

@@ -18,20 +18,23 @@ You should have a new folder called the name of your challenge in [challenges](.
 - `README.md` : explain what the solution function should do (the instructions).
 - `input-output.json` : An array of possible input/output. This file allows you to test solutions.
 
-    Example of file :
+  Example of file :
-    ```json 
+
-    [
+  ```json
-        {
+  [
-            "input": ["arg"],
+    {
-            "output": "Hello world arg!"
+      "input": ["arg"],
-        },
+      "output": "Hello world arg!"
-        {
+    },
-            "input": ["Divlo"],
+    {
-            "output": "Hello world Divlo!"
+      "input": ["Divlo"],
-        }
+      "output": "Hello world Divlo!"
-    ]
+    }
-    ```
+  ]
-    Each object has a "input" key, an array where each item is an argument passed to the solution function when it's executed. The "output" key is the expected output with the given input.
+  ```
+
+  Each object has a "input" key, an array where each item is an argument passed to the solution function when it's executed. The "output" key is the expected output with the given input.
+
 - `solutions` folder where there are all solutions for this specific challenge.
 
 ## Solution for an already existing challenge
@@ -54,53 +57,52 @@ Steps to add a new language :
 
 1. Code the execute file in the appropriate language
 
-    Algorithm of the execute file : 
+   Algorithm of the execute file :
 
-    - Import the solution function (same  directory, ignore errors)
+   - Import the solution function (same directory, ignore errors)
-    - Read the `./input.json` files and convert it as JSON (not plain text string)
+   - Read the `./input.json` files and convert it as JSON (not plain text string)
-    - Execute the solution function imported with the inputs as arguments
+   - Execute the solution function imported with the inputs as arguments
-    - Create and write a new file called `./output.json`, with the output result of the solution function
+   - Create and write a new file called `./output.json`, with the output result of the solution function
 
-    Example in javascript with node.js ([execute.js](../scripts/languages-wrapper/execute.js)) : 
+   Example in javascript with node.js ([execute.js](../scripts/languages-wrapper/execute.js)) :
-    ```javascript 
-    const path = require('path')
-    const fs = require('fs').promises
-    const solution = require('./solution')
 
-    const inputPath = path.join(__dirname, 'input.json')
+   ```javascript
-    const outputPath = path.join(__dirname, 'output.json')
+   const path = require('path')
+   const fs = require('fs').promises
+   const solution = require('./solution')
 
-    const main = async () => {
+   const inputPath = path.join(__dirname, 'input.json')
-        const inputFile = await fs.readFile(inputPath)
+   const outputPath = path.join(__dirname, 'output.json')
-        const inputJSON = JSON.parse(inputFile)
 
-        const result = solution.apply(null, inputJSON)
+   const main = async () => {
-        await fs.writeFile(outputPath, JSON.stringify(result))
+     const inputFile = await fs.readFile(inputPath)
-    }
+     const inputJSON = JSON.parse(inputFile)
 
-    main()
+     const result = solution.apply(null, inputJSON)
-    ```
+     await fs.writeFile(outputPath, JSON.stringify(result))
+   }
+
+   main()
+   ```
 
 1. Add the language in the `_languages.json` file as a new object of the array. Example for JavaScript :
-    ```json 
+   ```json
-    {
+   {
-        "name": "JavaScript",
+     "name": "JavaScript",
-        "extension": ".js",
+     "extension": ".js",
-        "launch": "node"
+     "launch": "node"
-    }
+   }
-    ```
+   ```
 1. Create a new solution file with the default basic boilerplate code in `/scripts/languages-wrapper/templates`. Example : `solution.js`:
-    ```js
-    function solution () {
 
-    }
+   ```js
+   function solution () {}
+
+   module.exports = solution
+   ```
 
-    module.exports = solution
-    ```
 1. Add the language in the language available in [README.md](../README.md) file.
 
-
-
 ## Spelling error
 
 Correct spelling errors, in the README or CONTRIBUTING files.

.gitpod.yml

@@ -1,4 +1,4 @@
-image: gitpod/workspace-full
+image: 'gitpod/workspace-full'
 
 tasks:
-  - init: npm install
+  - init: 'npm install'

LICENSE

@@ -1,5 +1,5 @@
 The MIT License (MIT)
-Copyright © 2020
+Copyright (c)
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 

challenges/pairwise/README.md

@@ -10,9 +10,9 @@ You may use multiple pairs that have the same numeric elements but different ind
 
 For example `pairwise([7, 9, 11, 13, 15], 20)` returns `6`. The pairs that sum to 20 are `[7, 13]` and `[9, 11]`. We can then write out the array with their indices and values.
 
-| Index | 0 | 1 | 2  | 3  | 4  |
+| Index | 0   | 1   | 2   | 3   | 4   |
-|-------|---|---|----|----|----|
+| ----- | --- | --- | --- | --- | --- |
-| Value | 7 | 9 | 11 | 13 | 15 |
+| Value | 7   | 9   | 11  | 13  | 15  |
 
 Below we'll take their corresponding indices and add them.
 

challenges/reverse-polish-notation/README.md

@@ -6,13 +6,13 @@ Created by [@Divlo](https://github.com/Divlo) on 29 September 2020.
 
 Your job is to create a calculator which evaluates expressions in Reverse Polish notation (a mathematical notation in which operators follow their operands. It does not need any parentheses as long as each operator has a fixed number of operands).
 
-For example expression 5 1 2 + 4 * + 3 - (which is equivalent to 5 + ((1 + 2) * 4) - 3 in normal notation) should evaluate to 14.
+For example expression 5 1 2 + 4 _ + 3 - (which is equivalent to 5 + ((1 + 2) _ 4) - 3 in normal notation) should evaluate to 14.
 
 For your convenience, the input is formatted such that a space is provided between every token.
 
 Empty expression should evaluate to 0.
 
-Valid operations are +, -, *, /.
+Valid operations are +, -, \*, /.
 
 You may assume that there won't be exceptional situations (like stack underflow or division by zero).
 

package-lock.json

@@ -0,0 +1,778 @@
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+      "dev": true,
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+      }
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+      "dev": true
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+}

tsconfig.json

@@ -1,6 +1,6 @@
 {
   "compilerOptions": {
-    "target": "ES2018",
+    "target": "ES2019",
     "module": "commonjs",
     "moduleResolution": "node",
     "strict": true,