Inventory Update: Right Approach?

Inventory Update: Right Approach?
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#1

I’ve searched the internet on how to compare one two-D array to another. My entering approach was that a nested for loop was the wrong idea. It seems from my search that others have used nested do loops to compare one two-D array to another.

I’m not looking for a solution. Just an approach. Is there another approach besides nested for loops and if so, at a very high level, what is that approach?

thanks


#2

I did it with nested loops. 3 in fact!