Definition: 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
Input: [38, 16, 6, 20, 32, 28, 26, 40, 3, 36, 15, 29, 30, 19, 47, 10, 23, 39, 4, 25], target=67
Output:
[38, 29]