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amazonProcessLogs.js
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amazonProcessLogs.js
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"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 'processLogs' function below.
*
* The function is expected to return a STRING_ARRAY.
* The function accepts following parameters:
* 1. STRING_ARRAY logs
* 2. INTEGER threshold
*/
function processLogs(logs, threshold) {
// Write your code here
const transactionCounts = {};
const users = new Set();
for (const line of logs) {
let [sender, recipient, amount] = line.split(" ");
sender = parseInt(sender);
recipient = parseInt(recipient);
amount = parseFloat(amount);
if (!amount || !recipient || !sender) continue;
transactionCounts[sender] = (transactionCounts[sender] || 0) + 1;
if (sender !== recipient) {
transactionCounts[recipient] = (transactionCounts[recipient] || 0) + 1;
}
if (transactionCounts[sender] >= threshold) {
users.add(sender);
}
if (transactionCounts[recipient] >= threshold) {
users.add(recipient);
}
}
return [...users].sort((a, b) => a - b);
}
function main() {
const ws = fs.createWriteStream(process.env.OUTPUT_PATH);
const logsCount = parseInt(readLine().trim(), 10);
let logs = [];
for (let i = 0; i < logsCount; i++) {
const logsItem = readLine();
logs.push(logsItem);
}
const threshold = parseInt(readLine().trim(), 10);
const result = processLogs(logs, threshold);
ws.write(result.join("\n") + "\n");
ws.end();
}