You are given a list of integers and an integer target, return a list of a pair of numbers in any order such that they add up to target. If there is no such pair of numbers, then return an empty list

[EX Q]: [15, 1, 3, 11, 8, 40, 4, 21, 17, 30, 23, 9, 45, 5, 25, 18, 42, 39, 22, 2], target=38
[EX A]: [21, 17]

[EX Q]: [22, 2, 27, 4, 41, 44, 45, 40, 14, 36, 35, 16, 13, 8, 25, 7, 5, 43, 9, 6], target=41
[EX A]: [27, 14]

[EX Q]: [29, 10, 45, 19, 24, 21, 3, 25, 30, 11, 16, 44, 26, 17, 48, 31, 43, 12, 1, 34], target=41
[EX A]:
[30, 11]