Given an array consisting of 2n elements in the form
[x1,x2,…,xn,y1,y2,…,yn], return the array in the form [x1,y1,x2,y2,…,xn,yn].
The Reddit poster claims to be new to Scheme and functional programming, and was thinking of a solution using length and list-ref, but couldn’t solve the problem.
Your task is to show the student how to solve the problem. When you are
finished, you are welcome to read or run a suggested solution, or to post your own solution or discuss the exercise in the comments below.