Prepend a new head

Insert value at the front of the list.

linked-list lists pointers

Implement `prepend(values: list, x) -> list` returning a new list with `x` as the new head node.

Constraints

0 ≤ list lengths ≤ 10_000 unless noted.

Example

>>> prepend(...)
# see tests

22 points ~20 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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