[HackerRank/Algorithms] Warmup - Compare the Triplets

Problem. Warmup - Compare the Triplets

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Link.

https://www.hackerrank.com/challenges/compare-the-triplets/problem?isFullScreen=true 

Compare the Triplets | HackerRank

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Description.

Alice and Bob each created one problem for HackerRank. A reviewer rates the two challenges, awarding points on a scale from 1 to 100 for three categories: problem clarity, originality, and difficulty.

The rating for Alice's challenge is the triplet a = (a[0], a[1], a[2]), and the rating for Bob's challenge is the triplet b = (b[0], b[1], b[2]).

The task is to find their comparison points by comparing a[0] with b[0], a[1] with b[1], and a[2] with b[2].

• If a[i] > b[i], then Alice is awarded 1 point.
• If a[i] < b[i], then Bob is awarded 1 point.
• If a[i] = b[i], then neither person receives a point.

Comparison points is the total points a person earned.

Given a and b, determine their respective comparison points.

 

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Key Point. 

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My Answer. 

'use strict';

const fs = require('fs');

process.stdin.resume();
process.stdin.setEncoding('utf-8');

let inputString = '';
let currentLine = 0;

process.stdin.on('data', function(inputStdin) {
    inputString += inputStdin;
});

process.stdin.on('end', function() {
    inputString = inputString.split('\n');

    main();
});

function readLine() {
    return inputString[currentLine++];
}

/*
 * Complete the 'compareTriplets' function below.
 *
 * The function is expected to return an INTEGER_ARRAY.
 * The function accepts following parameters:
 *  1. INTEGER_ARRAY a
 *  2. INTEGER_ARRAY b
 */

function compareTriplets(a, b) {
    let Alice = 0;
    let Bob = 0;
    
    for(let i = 0; i < 3; i++) {
        if(a[i] > b[i])
            Alice = Alice + 1;
        else if(a[i] < b[i])
            Bob = Bob + 1;
    }
    
    return [Alice, Bob];
}

function main() {
    const ws = fs.createWriteStream(process.env.OUTPUT_PATH);

    const a = readLine().replace(/\s+$/g, '').split(' ').map(aTemp => parseInt(aTemp, 10));

    const b = readLine().replace(/\s+$/g, '').split(' ').map(bTemp => parseInt(bTemp, 10));

    const result = compareTriplets(a, b);

    ws.write(result.join(' ') + '\n');

    ws.end();
}

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References.