ArraysLeftRotation.cs

// A left rotation operation on an array of size  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. Then print the updated array as a single line of space-separated integers.

// Input Format

// The first line contains two space-separated integers denoting the respective values of (the number of integers) and  (the number of left rotations you must perform). 
// The second line contains  space-separated integers describing the respective elements of the array's initial state.

// 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:

// Thus, we print the array's final state as a single line of space-separated values, which is 5 1 2 3 4.

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
class Solution {
    
    static void shift(int n, int d, int[] ar) {
        var mylist = new int[n];
        var index = n-1;
        var temp = 0;
        
        for (var i=index; i>=0; i--) {
            if (i-d >= 0) {
                mylist[i-d] = ar[i]; 
            } else {
                temp = i - d;
                mylist[mylist.Count() + temp] = ar[i];
            }
        }
        
        foreach (var element in mylist) {
            Console.Write(element + " ");
        }
    
    }
       
    static void Main(String[] args) {
        string[] tokens_n = Console.ReadLine().Split(' ');
        int n = Convert.ToInt32(tokens_n[0]);
        int k = Convert.ToInt32(tokens_n[1]);
        string[] a_temp = Console.ReadLine().Split(' ');
        int[] a = Array.ConvertAll(a_temp,Int32.Parse);
        
        shift(n, k, a);
    }
}