Diffing "hmmm" and "hmm"

Title: hmmm hmm
Author: jed pack jed pack
Submitted: 2003-11-04 16:16:52 UTC 2003-11-04 16:17:46 UTC
Status: Passed Passed
Score: 56.0 55.0
Result: pass pass
CPU Time: 0.081 0.08
Code:
b=repmat(b,1,99);
i=a~=' ';
a(i)='a'+rem(a(i)-194+b(i),26);
a(i)=97+rem(a(i)-194+b(i),26);
c=a;