Arrays

A left rotation operation on an array shifts each of the array's elements 1 unit to the left. For example, if 2 left rotations are performed on array [1,2,3,4,5] , then the array would become [3,4,5,1,2].

Given an array a of n integers and a number,d , perform d left rotations on the array. Return the updated array to be printed as a single line of space-separated integers.

CODE :-

import java.io.*;

import java.math.*;

import java.security.*;

import java.text.*;

import java.util.*;

import java.util.concurrent.*;

import java.util.regex.*;

public class Solution {

    // Complete the rotLeft function below.

    static int[] rotLeft(int[] a, int d) 

    {

    

        int[] b= new int[a.length];

        for(int i =0;i<d;i++){

            b[a.length-d+i]=a[i];

        }

        for(int i =d;i<a.length;i++){

            b[i-d]=a[i];

        }

       

        return b;

    }

    private static final Scanner scanner = new Scanner(System.in);

    public static void main(String[] args) throws IOException {

        BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));

        String[] nd = scanner.nextLine().split(" ");

        int n = Integer.parseInt(nd[0]);

        int d = Integer.parseInt(nd[1]);

        int[] a = new int[n];

        String[] aItems = scanner.nextLine().split(" ");

        scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");

        for (int i = 0; i < n; i++) {

            int aItem = Integer.parseInt(aItems[i]);

            a[i] = aItem;

        }

        int[] result = rotLeft(a, d);

 for(int i =0;i<result.length;i++){

            System.out.print(result[i]);

        }

        for (int i = 0; i < result.length; i++) {

            bufferedWriter.write(String.valueOf(result[i]));

            if (i != result.length - 1) {

                bufferedWriter.write(" ");

            }

        }

        bufferedWriter.newLine();

        bufferedWriter.close();

        scanner.close();

    }

}