#0092

Rotate a List Right

EasyPython15 min10 XP

Problem

Given a list and integer k, return a new list rotated right by k positions. If the list is empty, return an empty list.

Why This Matters

List rotation checks whether you understand indexes, modulo, and slicing without mutating caller data accidentally.

Function Signature

def rotate_right(items, k):

Examples

Example 1

Input[1, 2, 3, 4, 5], k = 2

Output[4, 5, 1, 2, 3]

The last two values move to the front.

Constraints

Return a new list.
k can be larger than the list length.
Handle empty lists.

CodePython

def rotate_right(items, k):
    """
    Input example: [1, 2, 3, 4, 5], k = 2
    Return: [4, 5, 1, 2, 3]
    Return the value from the function so the tests can compare it. Do not print unless the prompt asks.
    """
    # write your code here
    return items

def rotate_right(items, k):
    """
    Input example: [1, 2, 3, 4, 5], k = 2
    Return: [4, 5, 1, 2, 3]
    Return the value from the function so the tests can compare it. Do not print unless the prompt asks.
    """
    # write your code here
    return items

Visible browser tests run here when available.

Testcases1 visible / 3 hidden categories

Core example

Input[1, 2, 3, 4, 5], k = 2

Expected[4, 5, 1, 2, 3]

The last two values move to the front.

Hidden Test Categories

k equals 0k larger than lengthempty list