Mark and Toys Hacker Rank

maximumToys.js

'use strict';

const fs = require('fs');

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

let inputString = '';
let currentLine = 0;

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

process.stdin.on('end', _ => {
    inputString = inputString.replace(/\s*$/, '')
        .split('\n')
        .map(str => str.replace(/\s*$/, ''));

    main();
});

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

// Complete the maximumToys function below.
function maximumToys(prices, k) {

    const n = prices.length;
    let items = 0, spend = 0;
    prices.sort((a,b)=>a-b).every((v,i)=>{
            spend+=v;
            items=i;
            return spend<=k;
        });
        return items;
   
}

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

    const nk = readLine().split(' ');

    const n = parseInt(nk[0], 10);

    const k = parseInt(nk[1], 10);

    const prices = readLine().split(' ').map(pricesTemp => parseInt(pricesTemp, 10));

    let result = maximumToys(prices, k);

    ws.write(result + "\n");

    ws.end();
}