Create array_rotaion.py

data_structures/arrays/array_rotaion.py

@@ -0,0 +1,37 @@
+# https://www.geeksforgeeks.org/array-rotation/
+
+def rotate_array(input_array, positions_to_rotate):
+    """
+    Rotate an input array to the right by a specified number of positions.
+
+    Parameters:
+    - input_array (list): The input array to be rotated.
+    - positions_to_rotate (int): The number of positions to rotate the input array to the right.
+
+    Returns:
+    - list: The rotated array.
+
+    >>> rotate_array([1, 2, 3, 4, 5], 2)
+    [4, 5, 1, 2, 3]
+    >>> rotate_array([7, 9, 1, 4, 6], 3)
+    [1, 4, 6, 7, 9]
+    >>> rotate_array([11, 12, 13, 14, 15], 5)
+    [11, 12, 13, 14, 15]
+    >>> rotate_array(['a', 'b', 'c', 'd'], 2)
+    ['c', 'd', 'a', 'b']
+    >>> rotate_array([], 3)
+    []
+    """
+
+    if not input_array:
+        return input_array
+
+    positions_to_rotate = positions_to_rotate % len(input_array)  # Ensure positions_to_rotate is within the array size
+    rotated_array = input_array[-positions_to_rotate:] + input_array[:-positions_to_rotate]
+
+    return rotated_array
+
+if __name__ == "__main__":
+    import doctest
+
+    doctest.testmod()