if i have random matrices how to find a specific matrix?

Question

Firas Al-Kharabsheh 2016-4-17

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评论： Walter Roberson 2016-4-19

if i have a random 20 binary matrix and matrix A ;

A = [ 1 0 1 1
      0 1 0 0
      1 1 0 1
      1 1 0 1 ]
s =[ 1 0 1 0
     1 1 0 0
     0 1 1 0
     0 0 1 0 ]
 s = [ 1 1 0 1 
        0 1 0 0
        1 1 0 1
        0 1 0 1 ]
 .
 .
 .
 .
 s = [ 1 0 1 0
       0 0 0 1
       1 1 1 0
       1 0 1 1 ]

and after apply some operation i want to find the minimum value and then return the matrix that have the minimum value

this is my code

for k=1:20
  s = randi ([0 1 ] ,4,4);
  S(k)=(sum (sum(A ~= s)));
end
s7=min(S)

how can return the tow matrix have the min value??

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John D'Errico 2016-4-17

You seem to be asking pretty basic questions in programming (over and over again) in a very confused way. That suggests the best solution is for you to spend some time learning programming. Pick up a basic text on MATLAB, and start reading. Do the examples. Try the problems suggested.

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Answer 1

John D'Errico 2016-4-17

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Why not just save the current matrix, IF your computation is better than the previous best solution? This requires only an if statement inside the loop, and that you store the current best objective function at any point in time.

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Answer 2

Azzi Abdelmalek 2016-4-17

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在 MATLAB Online 中打开

A = [ 1 0 1 1
    0 1 0 0
    1 1 0 1
    1 1 0 1 ]
for k=1:20
s = randi ([0 1 ] ,4,4);
M{k}=s;
S(k)=(sum (sum(A ~= s)));
end
[s7,idx]=min(S)
out=M{idx}