Level 3Exercise #61

Rotate on-call staff

Rotate a staff list right by k positions.

What you’ll practice

This Level 3 exercise focuses on deque.rotate in the Collections curriculum. Solve the challenge prompt above using clear, idiomatic Python and the relevant language or standard-library tools.

Relevant Python reference: collections.deque.

Sample Test Cases

Example #1

Input:rotate_staff(['A','B','C'], k=1)

Output:['C','A','B']

Reference Solution

Reveal Reference Solution

def rotate_staff(staff: list[str], k: int) -> list[str]:
    from collections import deque
    schedule = deque(staff)
    schedule.rotate(k)
    return list(schedule)

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Rotate on-call staff

What you’ll practice

Sample Test Cases

Further Reading

Reference Solution