Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted in order. You may assume no duplicates in the array.

Inspired by “A convenient untruth” by Glennan Carnie. When declaring a multi array (multi-dimensional array) in C/++, we end up with is a contiguous chunk of memory. This memory block spans over the ...