HackerRank / Apple and Orange

hackerrank--apple-and-orange.js

'use strict';

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 'countApplesAndOranges' function below.
 *
 * The function accepts following parameters:
 *  1. INTEGER s
 *  2. INTEGER t
 *  3. INTEGER a
 *  4. INTEGER b
 *  5. INTEGER_ARRAY apples
 *  6. INTEGER_ARRAY oranges
 */

function countApplesAndOranges(s, t, a, b, apples, oranges) {
    const sum = (tree) => (memo, value) => {
        const distance = tree + value;
        
        if (s <= distance && t >= distance) {
            memo++;
        }
        
        return memo;
    };
    
    const countApples = apples.reduce(sum(a), 0);
    const countOranges = oranges.reduce(sum(b), 0);

    console.log(countApples);
    console.log(countOranges);
}

function main() {
    const firstMultipleInput = readLine().replace(/\s+$/g, '').split(' ');

    const s = parseInt(firstMultipleInput[0], 10);

    const t = parseInt(firstMultipleInput[1], 10);

    const secondMultipleInput = readLine().replace(/\s+$/g, '').split(' ');

    const a = parseInt(secondMultipleInput[0], 10);

    const b = parseInt(secondMultipleInput[1], 10);

    const thirdMultipleInput = readLine().replace(/\s+$/g, '').split(' ');

    const m = parseInt(thirdMultipleInput[0], 10);

    const n = parseInt(thirdMultipleInput[1], 10);

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

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

    countApplesAndOranges(s, t, a, b, apples, oranges);
}