Amazon transaction logs

processLogs.js

function processLogs(logs, threshold) {
    const n = logs.length;
    let transactionCountMap = new Map()
    for(let i=0;i<n;i++) {
        const log = logs[i];
        const [sender, recepient, amount] = log.split(" ");
        transactionCountMap.set(sender, (transactionCountMap.get(sender) || 0) + 1)
        if(sender !== recepient) {
            transactionCountMap.set(recepient, (transactionCountMap.get(recepient) || 0) + 1)
        }
    }
    const transactionCountEntries = Array.from(transactionCountMap.entries());
    const overThreshholdUsers = transactionCountEntries.filter(x => x[1] >= threshold).map(x => x[0]);
    return overThreshholdUsers.sort((x,y) => parseInt(x)-parseInt(y) > 0 ? 1 : -1)
}