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Re: Compare the Triplets | Printing two values.

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On Sunday, January 19, 2020 at 2:05:15 AM UTC-6, manish pamnani wrote:
> Hey,
> 
> I am solving a problem on hackerrank(https://www.hackerrank.com/challenges/compare-the-triplets/problem?h_r=next-challenge&h_v=zen). The problem states to complete the function 
> compareTriplets which must return an array of two integers, the first being ALice's score and the secoond being Bob's.
> 
> compareTriplets has the following parameter(s):
> 
> a: an array of integers representing Alice's challenge rating
> b: an array of integers representing Bob's challenge rating
> 
> For more detail on the problem, refer to the following link:
> https://www.hackerrank.com/challenges/compare-the-triplets/problem?h_r=next-challenge&h_v=zen
> 
> For the same challenge i wrote the following solution:
> 
> ```
> function compareTriplets(a, b) {
>     for (let i = 0; i < 4; i ++) {
>         points=[];
>         pointsArray=[];
>         if (a[i] > b[i]) {
>             points[i]=1;
>             pointsArray.push(points[i])
>         } 
>          if (a[i] === b[i]) {
>              points[i]=0;
>         } 
>         if (b[i] > a[i]) {
>             points[i]=1;
>             pointsArray.push(points[i])
>         }
>         return pointsArray;
>     }
> }
> ```
> 
> The problem states that the output should be like [1,1] i.e. [points earned by alice, points earned by bob]
> 
> But somehow it displays a array with four elements with the values [1], [], [1], []
> Refer to https://ibb.co/GCkwM9j for further details. 
> 
> Can anybody suggest anything?


```
function compareTriplets(a, b) {
    return a.map((value, i) => 
        value < b[i] ? [0,1] : value == b[i] ? [0,0] :[1,0]
    ).reduce((sum, next) =>
        [sum[0] + next[0], sum[1] + next[1]]
    )
}
```

Map and reduce methods could be combined if you only want a single pass

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Compare the Triplets | Printing two values. manish pamnani <manishpamnani169@gmail.com> - 2020-01-19 00:05 -0800
  Re: Compare the Triplets | Printing two values. "R.Wieser" <address@not.available> - 2020-01-19 10:08 +0100
    Re: Compare the Triplets | Printing two values. manish pamnani <manishpamnani169@gmail.com> - 2020-01-19 09:08 -0800
      Re: Compare the Triplets | Printing two values. manish pamnani <manishpamnani169@gmail.com> - 2020-01-19 09:09 -0800
        Re: Compare the Triplets | Printing two values. "R.Wieser" <address@not.available> - 2020-01-19 19:10 +0100
      Re: Compare the Triplets | Printing two values. Julio Di Egidio <julio@diegidio.name> - 2020-01-19 09:42 -0800
  Re: Compare the Triplets | Printing two values. "R.Wieser" <address@not.available> - 2020-01-19 10:47 +0100
  Re: Compare the Triplets | Printing two values. "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2020-01-19 13:03 -0800
    Re: Compare the Triplets | Printing two values. Julio Di Egidio <julio@diegidio.name> - 2020-01-19 14:05 -0800
      Re: Compare the Triplets | Printing two values. "Michael Haufe (TNO)" <tno@thenewobjective.com> - 2020-01-19 15:21 -0800
        Re: Compare the Triplets | Printing two values. Julio Di Egidio <julio@diegidio.name> - 2020-01-19 15:39 -0800

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