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Given a list of integers, swap the first and last elements and return the list. If the list has no elements, return a list with no elements.


list_swapEnds([1, 2, 3]) → [3, 2, 1]
list_swapEnds([1, 2, 3, 4]) → [4, 2, 3, 1]
list_swapEnds([]) → []

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public List<Integer> list_swapEnds(List<Integer> list) { }

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