02 - simpleArraySum.js

"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 'simpleArraySum' function below.
 *
 * The function is expected to return an INTEGER.
 * The function accepts INTEGER_ARRAY ar as parameter.
 */

function simpleArraySum(array) {
  // Write your code here
  return array.reduce((acc, curr) => acc + curr, 0);
}

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

  const arCount = parseInt(readLine().trim(), 10);

  const ar = readLine()
    .replace(/\s+$/g, "")
    .split(" ")
    .map((arTemp) => parseInt(arTemp, 10));

  const result = simpleArraySum(ar);

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

  ws.end();
}