Rail Fence Encryption function

Just wondering how i would do a rail fence encryption function. Unsure on the process.

for an understanding of the code please follow the link below: http://www.braingle.com/brainteasers/codes/railfence.php

Answer 1

[Guillaume]

reshape the string. Honestly, this is trivial to implement. Is it homework?

[Zachary Holmes]

Yeah it is. Im new to matlab and just needed a helping hand. Thanks

[Jake Wright]

Are you able to offer any more help via using reshape? Im brand new to matlab and need to solve this.