Arrays: Left Rotation

A left rotation operation on an array shifts each of the array's elements  unit to the left. For example, if  left rotations are performed on array , then the array would become .

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

Function Description

Complete the function rotLeft in the editor below. It should return the resulting array of integers.

rotLeft has the following parameter(s):

• An array of integers .
• An integer , the number of rotations.

Input Format

The first line contains two space-separated integers  and , the size of  and the number of left rotations you must perform.
The second line contains  space-separated integers .

Constraints

Output Format

Print a single line of  space-separated integers denoting the final state of the array after performing  left rotations.

Sample Input

5 4
1 2 3 4 5

Sample Output

5 1 2 3 4

Explanation

When we perform  left rotations, the array undergoes the following sequence of changes:

Solution(Java)                                                                                                                                               

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 len=a.length;

          int arr[]=new int[len];

            int t=d%len;

            if(t==0)

            return a;

            int tem=len-t;

            int i=0;

            int l1=d;

            while(tem>0)

            {

                arr[i++]=a[l1++];

                tem--;

            }

            for(int j=0;j<d;j++)

            {

                arr[i++]=a[j];

            }

        return arr;

    }

    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++) {

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

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

                bufferedWriter.write(" ");

            }

        }

        bufferedWriter.newLine();

        bufferedWriter.close();

        scanner.close();

    }

}