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

[36, 18, 12, 48, 39, 30, 19, 1, 34, 21, 17, 49, 44, 37, 47, 6, 26, 2, 28, 23], target=29
[12, 17]

[39, 41, 1, 42, 18, 21, 32, 40, 35, 45, 4, 43, 28, 8, 16, 17, 29, 26, 23, 22], target=51
[43, 8]

[33, 13, 6, 40, 23, 3, 49, 10, 30, 8, 31, 38, 15, 5, 20, 9, 16, 19, 45, 12], target=25

[10, 15]