Detailed Instructions: 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
See one example below:
Problem: [2,4,5,6,4,8,9,10], target=10
Solution: [2,8]
Explanation: 2 and 8 are present in the list and sum to 10 which was the target sum

Problem: [20, 46, 12, 22, 35, 6, 4, 39, 14, 26, 10, 34, 41, 31, 43, 25, 7, 9, 28, 42], target=10
Solution:
[6, 4]