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 Input:
[8, 37, 11, 21, 18, 13, 7, 40, 29, 17, 2, 15, 39, 34, 27, 42, 16, 47, 33, 23], target=31

Ex Output:
[18, 13]


Ex Input:
[1, 40, 29, 10, 12, 21, 47, 28, 49, 38, 13, 26, 42, 25, 15, 11, 44, 4, 43, 23], target=16

Ex Output:
[1, 15]


Ex Input:
[25, 1, 39, 40, 29, 49, 22, 43, 42, 38, 48, 2, 46, 15, 16, 12, 34, 3, 27, 30], target=55

Ex Output:

[40, 15]