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

[8, 34, 44, 22, 20, 41, 49, 46, 18, 13, 47, 11, 15, 38, 42, 3, 48, 17, 4, 14], target=18
[15, 3]

[34, 24, 1, 33, 20, 13, 21, 23, 11, 6, 26, 31, 38, 35, 40, 2, 4, 3, 27, 25], target=68
[33, 35]

[10, 33, 20, 46, 19, 6, 5, 45, 29, 2, 23, 42, 18, 24, 25, 36, 13, 15, 38, 8], target=32

[19, 13]