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

[30, 31, 13, 10, 14, 2, 33, 39, 23, 46, 8, 17, 37, 12, 41, 7, 40, 49, 22, 42], target=47
[14, 33]

[47, 24, 18, 7, 3, 35, 9, 21, 20, 30, 13, 44, 23, 17, 29, 46, 36, 6, 25, 4], target=54
[47, 7]

[42, 7, 8, 49, 34, 48, 36, 22, 21, 28, 23, 38, 47, 31, 27, 6, 4, 5, 1, 29], target=67

[36, 31]

