Insert value at index

Insert x at index i in a new list.

linked-list lists pointers

Implement `insert_at(values: list, i: int, x) -> list` inserting `x` at position `i`.

Constraints

0 ≤ list lengths ≤ 10_000 unless noted.

Example

>>> insert_at(...)
# see tests

35 points ~30 min

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Hints

Work on paper with a tiny list first.

Match the function signature exactly.

Test Results

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