Write either_not_both(a, b) returning a sorted list of values that are in exactly one of the lists.
either_not_both([1, 2, 3], [3, 4]) → [1, 2, 4]
either_not_both([1], [1]) → []
Submit runs 4 tests, including hidden edge cases.
Each hint gives a little more help. Try on your own first.
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