Element-wise Clip

Clip each value in a list to a given minimum and maximum range.

clipping lists conditionals

Write a function `clip_list(values, lower, upper)` that takes a list of numbers `values` and two numbers `lower` and `upper` (with `lower <= upper`) and returns a new list where each element is:
- `lower` if the element is less than `lower`,
- `upper` if the element is greater than `upper`,
- the element itself otherwise.
The original list must remain unchanged.

Constraints

1 <= len(values) <= 1000
-10**9 <= each element, lower, upper <= 10**9
`lower` <= `upper`
The function should run in O(n) time and O(n) extra space.

Example

>>> clip_list([1, 5, 10], 2, 8)
[2, 5, 8]
>>> clip_list([-5, 0, 3], -1, 1)
[-1, 0, 1]
>>> clip_list([], 0, 10)
[]

8 points ~10 min

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Hints

Use a list comprehension to build the result.

For each value, check if it is below lower, above upper, or in range.

Test Results

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