How to get sub array without cloning

Question

I know in C# we can always get the sub-array of a given array by using Array.Copy() method. However, this will consume more memory and processing time which is

Answer 1

First of all you must consider this as a premature optimization.

But you may use several ways to reduce memory consumption, if you sure you really need it:

1) You may use Flyweight pattern https://en.wikipedia.org/wiki/Flyweight_pattern to pool duplicated resources.

2) You may try to use unsafe directive and manual pointer management.

3) You may just switch to C for this functionality and just call native code from your C# program.

From my experience memory consumption for short-lived objects is not a big problem and I'd just write code with flyweight pattern and profile application afterwards.