Given a list of integers and a rotation count, rotate the elements of the list to the right by that count. Elements at the end wrap around to the beginning. Return the rotated list. If the list is null or empty, return an empty list. If the rotation count is negative or zero, return the original list unchanged.
Examples:
Input: nums = [1, 2, 3, 4, 5], k = 2
Output: [4, 5, 1, 2, 3]
Explanation: Rotating right by 2 moves the last 2 elements to the front
Input: nums = [10, 20, 30], k = 5
Output: [20, 30, 10]
Explanation: k=5 is equivalent to k=2 since k % 3 = 2, rotates by 2 positions
Input: nums = [1, 2, 3], k = 0
Output: [1, 2, 3]
Explanation: Zero rotation returns the original list unchanged
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