My goal here is to decode an encrypted message using perfect-k-shuffles, the encryption key is given

here is what I have so far, I dont know how I am supposed to decode the message

encodedString = 'aasfu aic talputte balde'; % Encrypted message

encryptionKey = [6,7];%  stores the m-value used in
% perfectMShuffle() function and the number of shuffles performed.

N = 1000;
cl = zeros(N/2,1);
for n = 2:2:N
    ordered = [1,n]';
    encodedString = ordered;
    encodedString = perfectMShuffle(encodedString,encryptionKey);
    counter = 1;
    while any(encodedString - ordered)
        encodedString = perfectMShuffle(encodedString,encryptionKey);
        counter = counter + 1;
    end
    cl(n/2) = counter;
end

here is my perfectMshuffle function

function outString = MekuluperfectMShuffle(inString,m)
n = length(inString);
X = n/m;
outString = reshape(reshape(inString,X,m)',n,1);
end

[Walter Roberson]

It seems a bit early to get to this point when you have not yet finished with your earlier question

http://www.mathworks.co.uk/matlabcentral/answers/90311-can-someone-help-implement-the-perfect-shuffle-function

[Walter Roberson]

Duplicates http://www.mathworks.co.uk/matlabcentral/answers/90231-i-am-trying-to-decode-an-encrypted-message

Code from here should be entered into existing question.

[Kevin Junior]

I made some further progress compare to last time

[Walter Roberson]

You do not need multiple active questions on the same topic. You should merge them into one question.