MarketVision Node Coding Challenge

Fork this repo with the answers and submit back!

Challenge 1: Data Transformations

Take the following data of student test scores:

[{
    name: 'Bobby',
    scores: [62,88,91,56,70]
},{
    name: 'Katie',
    scores: [93,70,66,85,89]
},{
    name: 'Michael',
    scores: [61,82,90,79,89]
},{
    name: 'Sarah',
    scores: [80,94,86,91,81]
}]

Write a ES6 function that will take that array of student data and return the following stats:

• The students' average, min, and max scores
• The student with the highest average score

Challenge 2: Data Transformations II

Write a single ES6 expression to take 'a=4,b=15,c=42' and convert it into an object.

Challenge 3: Serialize Promises

Write a function serialPromise() that will execute promises in series.

Example promise function:

function delayPromise(ms) {
    return new Promise(resolve => {
        setTimeout(() => {
            console.log('delayPromise(%d) done', ms);
            resolve(2*ms);
        }, ms);
    });
}

I should be able to run:

console.time('serialPromise')
serialPromise(delayPromise, [100,200,700,1000]).then(() => console.timeEnd('serialPromise'));

Resulting in something like:

delayPromise(100) done
delayPromise(200) done
delayPromise(700) done
delayPromise(1000) done
serialPromise: 2002.3681640625ms

Bonus

Have serialPromise() resolve to an array of the individual promise resolutions:

serialPromise(delayPromise, [100,500,100,600]).then(console.log);

Would result in:

[200, 1000, 200, 1200]

Because of the resolve(2*ms) in the delayPromise() function.