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
One example: [2,4,5,6,4,8,9,10], target=10
Solution is here: [2,8]
Explanation: 2 and 8 are present in the list and sum to 10 which was the target sum

Now, solve this: [34, 12, 24, 21, 25, 35, 13, 11, 40, 30, 2, 32, 1, 7, 31, 14, 33, 42, 22, 20], target=41
Solution:
[11, 30]