fibwolf

About it

This application was developed with nodejs and express-js, index.js contains the express configuration, with his get request,

app.get('/', (req, res) => {
    if (!req.query.n) {
        throw new Error(`query param 'n' is required ?n=3`) 
    }

    const paramN  = parseInt(req.query.n)
    if (!paramN) {
        throw new Error(`query param 'n' should be a number`) 
    }

    res.send( getFibonacci(paramN) );
})

this GET route, is calling getFibonacci function, you can find this function under src/fibanacci.js file, this file contains two functions,

getFibonacci

This function validates if the number is 0, if number is greater than 0 it will be call fib function

fib

This function runs recursive, it needs 4 parameters, previousValue, currentValue, index works as counter starting from 1 also is helping to avoid inifnite loops and upto this is the limit of our loop.

Installation

npm install

Run it

npm start

Test it

http://localhost:3000/?n=2