MATLAB: How to rewrite this code into a for-loop

for loopMATLAB

Hi, I am new to MATLAB and for-loops are kind of confusing to me. I just need to know how to rewrite the code below into a for-loop and the values of P and letterprob are supposed to be irrelevant.
 letterrow(1)=(P(letterprob(1,1),letterprob(1,2)));
 letterrow(2)=(P(letterprob(1,2),letterprob(1,3)));
 letterrow(3)=(P(letterprob(1,3),letterprob(1,4)));
 letterrow(4)=(P(letterprob(1,4),letterprob(1,5)));
 letterrow(5)=(P(letterprob(1,5),letterprob(1,6)));
 letterrow(6)=(P(letterprob(1,6),letterprob(1,7)));
 letterrow(7)=(P(letterprob(1,7),letterprob(1,8)));
 letterrow(8)=(P(letterprob(1,8),letterprob(1,9)));
 letterrow(9)=(P(letterprob(1,9),letterprob(1,10)));
 letterrow(10)=(P(letterprob(1,10),letterprob(1,11)));
 letterrow(11)=(P(letterprob(1,11),letterprob(1,12)));
 letterrow(12)=(P(letterprob(1,12),letterprob(1,13)));
 letterrow(13)=(P(letterprob(1,13),letterprob(1,14)));
 letterrow(14)=(P(letterprob(1,14),letterprob(1,15)));
 letterrow(15)=(P(letterprob(1,15),letterprob(1,16)));
 letterrow(16)=(P(letterprob(1,16),letterprob(1,17)));
 letterrow(17)=(P(letterprob(1,17),letterprob(1,18)));
 letterrow(18)=(P(letterprob(1,18),letterprob(1,19)));
 letterrow(19)=(P(letterprob(1,19),letterprob(1,20)));
 letterrow(20)=(P(letterprob(1,20),letterprob(1,21)));
 letterrow(21)=(P(letterprob(1,21),letterprob(1,22)));
 letterrow(22)=(P(letterprob(1,22),letterprob(1,23)));
 letterrow(23)=(P(letterprob(1,23),letterprob(1,24)));
 letterrow(24)=(P(letterprob(1,24),letterprob(1,25)));
 letterrow(25)=(P(letterprob(1,25),letterprob(1,26)));
 letterrow(26)=(P(letterprob(1,26),letterprob(1,27)));
 letterrow(27)=(P(letterprob(1,27),letterprob(1,1)));

Best Answer

Try this:
for k = 1 : 27
    k2 = k + 1;
    if k2 == 27
        k2 = 1;
    end
    letterrow(k) = P(letterprob(1, k), letterprob(1, k+1));
end
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