I am sure there are other more subtle ways to go about it but this seems about as fast as I can make it for a general brute-force solution (0.11s)
This one seems to work for the large test case, too, although it is not a general solution [for size(p,1)>100 it only tests corner points].
Test if a Number is a Palindrome without using any String Operations
Sort numbers by outside digits
Basic arrays operations.
Repeat middle rows and columns of an array
Side of a rhombus
Factorial: Unlimited Size : java.math
Magic - Faro Shuffle
Criss-Cross: NHL - Optimize Matrix Size
Vectorize the digits of an Integer
Find the treasures in MATLAB Central and discover how the community can help you!
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a web site from the following list:
Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.
Contact your local office