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
Q: [29, 18, 9, 39, 28, 42, 7, 1, 30, 22, 38, 47, 5, 2, 41, 11, 33, 12, 14, 4], target=99
A: 
[]