Diffing "hmm" and "hmmmm"

Title: hmm hmmmm
Author: jed pack jed pack
Submitted: 2003-11-04 16:17:46 UTC 2003-11-04 16:19:04 UTC
Status: Passed Passed
Score: 55.0 54.0
Result: pass pass
CPU Time: 0.08 0.08
Code: 
b=repmat(b,1,99);
i=a~=' ';
a(i)=97+rem(a(i)-194+b(i),26);
a(i)=97+rem(a(i)-12+b(i),26);
c=a;