Tinder Discovery may need to identify two candidate scores whose combined value matches a requested target. Given an array of integers and a target sum, return any pair of distinct array elements whose values add up to the target.
Return the pair as a two-element list containing the values, not their indices. The pair may be returned in either order. If no valid pair exists, return an empty list. Do not use the same array element twice, even when its value would satisfy the target with itself.
Implement find_pair(nums, target), where nums is a list of integers and target is an integer. Return a two-element list [a, b] such that a and b come from different positions in nums and a + b == target, or return [] when no such pair exists. If multiple pairs exist, return any one of them.
def find_pair(nums, target):