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

[40, 15, 30, 11, 16, 43, 42, 10, 17, 49, 13, 38, 7, 25, 24, 44, 1, 32, 12, 5], target=39
[15, 24]

[25, 32, 28, 15, 31, 43, 4, 11, 42, 13, 33, 27, 45, 23, 6, 41, 16, 48, 38, 5], target=38
[25, 13]

[13, 9, 7, 45, 39, 24, 4, 1, 48, 26, 35, 27, 32, 41, 34, 19, 25, 21, 33, 2], target=34

[7, 27]