MATLAB: How to convert arrayfun to for loop

MATLAB

I found a source code online for a vigenere cipher and was wondering how to convert it to a for loop.
 function Array = Operator
    count = 27;                         %Primary function of the vignere encryptions by creating a 27x27 array
    Length = 1:count;                    %array of length 27
    %   ie, Create a matrix with 27 shifted substitution alphabets
    %   1 2 3 4 5 ... 26 27
    %   2 3 4 5 6 ... 27  1
    %   3 4 5 6 7 ...  1  2
    % etc.
    Array = arrayfun(@(n) circshift(Length, [0, -n]), 0:count-1, ... 
                 'UniformOutput', false);
    Array = reshape([Array{:}], count, count);
end
 function cipher_text = vigenere_cipher(origionalText,key)
    Array = Operator;
    key = lower(key) - double('a') + 1;     %Converts all text to lowercase
    key(key < 0) = 27;
    origionalText = lower(origionalText) - double('a') + 1;
    origionalText(origionalText < 0) = 27;
    keyLength = rem(0:(numel(origionalText)-1), numel(key))+1;       %Converst the key to the length of the origional text
    k = key(keyLength);
    % Encrypt: C(n) = V(k(n), plaintext(n))
    cipher_text = arrayfun(@(m,n) Array(m,n), k, origionalText) - 1;
    cipher_text(cipher_text == 26) = double(' ') - double('a');
    cipher_text = upper(char(cipher_text + double('a')));
end

Best Answer

 count = 27;
 Length = 1:count;
 for n = 0:count-1
   Array(n+1,:) = circshift(Length, [0, -n]);
 end
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