If Statement with Three Ranges (REPOST WITH M15 FILES)

[polarnaut]

I was getting a few of views on this but no replies (I'm assuming) because my files were in Prime 4.0.  I've added some more files viewable without 4.0.

I'm having trouble creating a program with an if statement that has three ranges, i, j, & k.  Results would be a matrix with k submatrices each with i rows and j columns.  See attached.  

[Werner_E · Accepted solution]

Something like this?

[Fred_Kohlhepp]

Either you're too fast or I'm too slow!

Very neat use of vectorization!

[Werner_E]

The data structure of M,N and X looks rather unnecessary blown up.

Maybe something more simple would do the job as well:

If for some reason you really need those structures M, N you could easily create it using one of the following methods: