You should call this a volcano matrix!
Could also be named an Atoll matrix
Thanks Ned, Richard for good suggestion. I have changed Problem Title accordingly.
nice!this is the easiest way to translate to another language.
Find the numeric mean of the prime numbers in a matrix.
Prime factor digits
Make a run-length companion vector
Natural numbers in string form
Time and Variable mapping and matching
Saving MATLAB session to a file
Mirror Image matrix across anti-diagonal
Calculate compression ratio of engine
Determine value using Look-up table method
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