Python program to right rotate the elements of an array

def right_rotate(arr, k):
    k %= len(arr)
    return arr[-k:] + arr[:-k]

# Example usage
arr = [1, 2, 3, 4, 5]
k = 2
print(right_rotate(arr, k))

The function right_rotate(arr, k) takes an array arr and an integer k as arguments. It uses the modulus operator to ensure that k is within the range of the length of the array. It creates a new array by concatenating the last k elements of the original array with the elements before the last k elements.

Method 2: Using collections.deque and rotate():

from collections import deque

def right_rotate(arr, k):
    k %= len(arr)
    dq = deque(arr)
    dq.rotate(k)
    return list(dq)

# Example usage
arr = [1, 2, 3, 4, 5]
k = 2
print(right_rotate(arr, k))

The function right_rotate(arr, k) takes an array arr and an integer k as arguments. It uses the modulus operator to ensure that k is within the range of the length of the array. It first creates a deque object from the given array, then use the rotate method to rotate the elements k times to the right and finally returns the deque object as a list.

Both methods above will output: [4, 5, 1, 2, 3] for the given example.

Method 1 uses slicing and concatenation to shift the elements in the array, and Method 2 uses collections.deque and rotate() method to rotate the elements in the array.