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

    main();
});

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

// Complete the rotLeft function below.
function singleRotation(a)
{
    let firstVariable = a[0];
    for(let i = 0;i<a.length-1;i++)
    {
        a[i] = a[i+1];
    }

    a[a.length-1] = firstVariable;

    return a;
}

function rotLeft(a, d) {

    for(let i=0;i<d;i++)
    {
        a = singleRotation(a);
    }

    return a;
}

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

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

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

    const d = parseInt(nd[1], 10);

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

    const result = rotLeft(a, d);

    ws.write(result.join(' ') + '\n');

    ws.end();
}