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 hashmaps, 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 10^6. Your challenge is to craft a Python function that identifies the closest number in array B to 2 * B[i] for each i. Once this number is identified, say for the specific i it is B[j], we want to create an array from A[j]s in the order of increasing is.
To illustrate this, let's consider an example. We have:
After running your function, the resulting array should look like this:
