Looking for variant approach/sketch

[GolamMostafa]

@build_1971

Congrats: you proved @robtillaart was wrong for this case...

No!
I have not concluded that @robtillaart was wrong in his saying. I have used the word apparent in #21. I had been waiting for his comment on the validity of my test sketch of #21.

@GolamMostafa

Is there anyting wrong in my test approach?

@GolamMostafa

With the help of the following test sketch, I have attempted to compute execution times for both recursive and iterative methods for 12!. Apparently, I have found that iterative method is a bit slower: