Could anyone help me to solve the apply the repmat command in the code.

A=[ 1 2 3 4 5 31 36 71 72;
    11 12 13 14 15 32 37 73 74;
    6 7 8 9 10 33 38 75 76;
    21 22 23 24 25 34 39 77 78;
    26 27 28 29 30 35 40 79 80; 
    41 42 43 44 45 46 47 81 82;
    48 49 50 51 52 53 54 83 84;
    85 86 87 88 89 90 91 92 93;
    94 95 96 97 98 99 16 17 18]
B=[0 0 61 0 0 0 0 0 0;
    65 0 0 0 0 0 0 0 0;
    0 63 0 0 0 0 0 0 0;
    0 0 0 62 0 0 0 0 0;
    0 0 0 0 64 0 0 0 0;
    0 0 0 0 0 0 67 0 0;
    0 0 0 0 0 68 0 0 0;
    0 0 0 0 0 0 0 66 0;
    0 0 0 0 0 0 0 0 69]
a=1:9

   for r=2:4

for N=2:4  
    c=randsample(a,N)
    C=B(c,:)

      non_0=sum(C)

      Z =repmat(non_0,r,1)

   E=C
   E(Z & C ==0)= A(Z & C ==0)

      [~,idx]=find(ismember(a,c))
       if N==4

      else
      a(idx)=[]
      end
  end
  end

If i run the code the repmat command was not taking values given in the loop.could anyone help me to fix it.

[Rik]

You have ignored the things I said in this answer. Don't ask a new question without saying why the previous solutions don't work, or even just ignoring those solutions.

If you keep this up, you will either be ignored by every frequent contributor, or maybe even be banned from this forum for spamming.

[Prabha Kumaresan]

Since i am unable to get the answer i keep on asking

[Stephen23]

@Prabha Kumaresan: when you keep asking the same question over and over again, it makes it harder for us to help you. It spreads information (in answers and comments particularly) over many locations, which makes it hard for us to keep track of what you told us and what you have been told.

IF you want help do NOT keep asking duplicate questions

Spamming questions is also very rude on any forum, and is unlikely to make people want to help you. I would suggest that you pay attention to the advice that you have been given.

Simply add comments to existing questions rather than adding new questions. It actually helps you too!

[Rik]

Apparently my answer didn't work for you. Comment below that answer why not.

Not giving up is a virtue, being stubborn isn't. You are asking for help. We are willing to give you that help, but you keep ignoring our advice, hardly reacting to anything we ask, and opening a similar question.