week-4-left-rotation.ts

'use strict';

import { WriteStream, createWriteStream } from "fs";
process.stdin.resume();
process.stdin.setEncoding('utf-8');

let inputString: string = '';
let inputLines: string[] = [];
let currentLine: number = 0;

process.stdin.on('data', function(inputStdin: string): void {
    inputString += inputStdin;
});

process.stdin.on('end', function(): void {
    inputLines = inputString.split('\n');
    inputString = '';

    main();
});

function readLine(): string {
    return inputLines[currentLine++];
}

/*
 * Complete the 'rotateLeft' function below.
 *
 * The function is expected to return an INTEGER_ARRAY.
 * The function accepts following parameters:
 *  1. INTEGER d
 *  2. INTEGER_ARRAY arr
 */

function rotateLeft(d: number, arr: number[]): number[] {
   let count = 1;
   
   do {
       const current = arr[0]; 
       
       arr.shift();
       count++;
       arr.push(current)
   } while(count <= d) 
   
    return arr;
}

function main() {
    const ws: WriteStream = createWriteStream(process.env['OUTPUT_PATH']);

    const firstMultipleInput: string[] = readLine().replace(/\s+$/g, '').split(' ');

    const n: number = parseInt(firstMultipleInput[0], 10);

    const d: number = parseInt(firstMultipleInput[1], 10);

    const arr: number[] = readLine().replace(/\s+$/g, '').split(' ').map(arrTemp => parseInt(arrTemp, 10));

    const result: number[] = rotateLeft(d, arr);

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

    ws.end();
}