Sorting: Bubble Sort Hacker Rank

countSwaps.js

'use strict';

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

let inputString = '';
let currentLine = 0;

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

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

    main();
});

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

// Complete the countSwaps function below.
function countSwaps(a) {
    const n = a.length;
    let numberOfSwap = 0;
    for (let i = 0; i < n - 1; i++) {
        let isSwaped = false;
        for (let j = 0; j < n - i - 1; j++) {
            if (a[j] > a[j + 1]) {
                if (a[j] > a[j + 1]) {
                    [a[j], a[j + 1], isSwaped] = [a[j + 1], a[j], true];
                    numberOfSwap++;
                }


            }
        }
        if (isSwaped === false) {
            break;

        }
    }
    console.log(`Array is sorted in ${numberOfSwap} swaps.`)
    console.log(`First Element: ${a[0]}`)
    console.log(`Last Element: ${a[n - 1]}`)
}

function main() {
    const n = parseInt(readLine(), 10);

    const a = readLine().split(' ').map(aTemp => parseInt(aTemp, 10));

    countSwaps(a);
}