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]: [38, 16, 6, 20, 32, 28, 26, 40, 3, 36, 15, 29, 30, 19, 47, 10, 23, 39, 4, 25], target=67
[EX A]: [38, 29]

[EX Q]: [16, 29, 33, 43, 35, 47, 21, 18, 37, 4, 28, 32, 11, 48, 20, 5, 9, 2, 13, 46], target=37
[EX A]: [16, 21]

[EX Q]: [35, 31, 33, 45, 20, 30, 17, 25, 18, 49, 10, 16, 8, 44, 48, 21, 37, 13, 5, 27], target=99
[EX A]: