Hackerrank - Arrays: Left Rotation

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.

Solution:

n, k = map(int, raw_input().strip().split(' '))
a = map(int, raw_input().strip().split(' '))

def array_left_rotation(arr,len_arr,rotation):
    return a[rotation:]+a[:rotation]

k = k%n

answer = array_left_rotation(a, n, k);
print ' '.join(map(str,answer))