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67 lines
2.4 KiB
Markdown
67 lines
2.4 KiB
Markdown
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# Defibrillators
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Created by [@Divlo](https://github.com/Divlo) on 18 February 2021.
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## Instructions
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### Goals
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The city of Montpellier has equipped its streets with defibrillators to help save victims of cardiac arrests. The data corresponding to the position of all defibrillators is available online.
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Based on the data we provide in the tests, write a program that will allow users to find the defibrillator nearest to their location using their mobile phone.
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### Rules
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The input data you require for your program is provided in text format.
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This data is comprised of lines, each of which represents a defibrillator. Each defibrillator is represented by the following fields:
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- A number identifying the defibrillator
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- Name
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- Address
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- Contact Phone number
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- Longitude (degrees)
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- Latitude (degrees)
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**Note 1**: These fields are separated by a semicolon (;).
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**Note 2**: Beware: the decimal numbers use the comma (,) as decimal separator. Remember to turn the comma (,) into dot (.) if necessary in order to use the data in your program.
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### Distance
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The distance `d` between two points `A` and `B` will be calculated using the following formula:
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**Note**: Note: In this formula, the latitudes and longitudes are expressed in **radians**. 6371 corresponds to the radius of the earth in km.
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**Note 2**: To convert radian to degrees : (π /180)
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The program will display the name of the defibrillator located the closest to the user’s position. This position is given as input to the program.
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The `solution` function takes 3 parameters :
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- `userLongitude` (in degrees)
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- `userLatitude` (in degrees)
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- `defibrillators` array of strings with the following format : `1;Maison de la Prevention Sante;6 rue Maguelone 340000 Montpellier;;3,87952263361082;43,6071285339217`
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### Example
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```js
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solution('3,879483', '43,608177', [
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'1;Maison de la Prevention Sante;6 rue Maguelone 340000 Montpellier;;3,87952263361082;43,6071285339217',
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'2;Hotel de Ville;1 place Georges Freche 34267 Montpellier;;3,89652239197876;43,5987299452849',
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'3;Zoo de Lunaret;50 avenue Agropolis 34090 Mtp;;3,87388031141133;43,6395872778854'
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])
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```
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It should returns `"Maison de la Prevention Sante"`.
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## Source
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[CodinGame - Defibrillators](https://www.codingame.com/training/easy/defibrillators)
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## Examples
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See the `input-output.json` file for examples of input/output.
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