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Technical Interview Problems in Python: Lists
List Rotation: Slice

For our first problem, we would like to “rotate” a list, or move elements forward in a list by a number of spaces, `k`.

Elements at the greatest index will “wrap around” to the beginning of the list.

``````list = ['a', 'b', 'c', 'd', 'e', 'f']
rotate(list, 0)
# ['a', 'b', 'c', 'd', 'e', 'f']
rotate(list, 1)
# ['f', 'a', 'b', 'c', 'd', 'e']
rotate(list, 3)
# ['d', 'e', 'f', 'a', 'b', 'c']``````

Clarifying Questions:

• Are there constraints on time or space efficiency?
• Nope! Just solve the problem.
• Should I account for negative inputs?
• The rotation input will always be positive.
• What if the rotation is greater than the list length?
• Continue wrapping!
• The “rotated” list would be the same as the original when `k` is equal to the length.

### Instructions

1.

Write a function `rotate()`, with the parameters `my_list` and `num_rotations`.

`rotate()` should return the input list rotated `num_rotations` forward.