Hello there! Are you ready to solve another engaging problem today? We have a practical task that will enhance your problem-solving skills. It involves critical aspects of programming — dealing with arrays and using techniques such as sorting and the two-pointer method. So, let's jump in!

Alright, our task is as follows. Suppose you have two equally long arrays, A and B, with a length varying from $1$ to $1000$, with each element being a unique positive integer ranging from $1$ up to $$. Your challenge is to craft a C++ function that identifies the closest number in array to for each . Once this number is identified, say, for the specific , it is , we want to create an array from s in the order of increasing s.