Sequencing a matrix with two constant variables and two incremental variables

Hello! I would like to write a short script that will make a 4x(number) matrix consisting of 4 different variables, A,B,M, and N. A starts at 1, B starts at 2, M starts at 3, and N starts at 4. I would like to sequence it so that A and B are constant as M and N reaches a max number i.e. N=100. Once N is at 100, A and B would increase by one and start the cycle again until A is at the max number minus 2. Ideally this would all be put into a matrix that I can later turn into a txt or csv file. I hope this makes sense, I am not much of a programmer so let me know if there is an easy way to do this! Thank you!

Answer 1

[Voss]

Like this?

max_num = 10; % change max_num to 100 if you want N to go up to 100

A = reshape(ones(1,max_num-3).'+(0:max_num-3),1,[]);
B = A+1;
M = repmat(3:max_num-1,1,max_num-2);
N = M+1;

X = [A; B; M; N];

disp(X);

  Columns 1 through 33

     1     1     1     1     1     1     1     2     2     2     2     2     2     2     3     3     3     3     3     3     3     4     4     4     4     4     4     4     5     5     5     5     5
     2     2     2     2     2     2     2     3     3     3     3     3     3     3     4     4     4     4     4     4     4     5     5     5     5     5     5     5     6     6     6     6     6
     3     4     5     6     7     8     9     3     4     5     6     7     8     9     3     4     5     6     7     8     9     3     4     5     6     7     8     9     3     4     5     6     7
     4     5     6     7     8     9    10     4     5     6     7     8     9    10     4     5     6     7     8     9    10     4     5     6     7     8     9    10     4     5     6     7     8

  Columns 34 through 56

     5     5     6     6     6     6     6     6     6     7     7     7     7     7     7     7     8     8     8     8     8     8     8
     6     6     7     7     7     7     7     7     7     8     8     8     8     8     8     8     9     9     9     9     9     9     9
     8     9     3     4     5     6     7     8     9     3     4     5     6     7     8     9     3     4     5     6     7     8     9
     9    10     4     5     6     7     8     9    10     4     5     6     7     8     9    10     4     5     6     7     8     9    10