%%%%%%%%生成已知量%%%%%%%%%
A ={[0 0] [1 0] [0 0] [0 1] [0 0] [1 1]
    [0 0] [0 0] [1 1] [0 0] [1 1] [0 0]
    [1 1] [0 0] [1 1] [0 0] [0 0] [1 0]
    [1 0] [0 0] [0 0] [1 0] [0 0] [0 0]
    [0 0] [0 0] [1 1] [0 0] [1 1] [0 0]
    [1 1] [0 0] [0 0] [0 0] [0 0] [0 0]
    [0 0] [0 0] [1 0] [0 1] [1 1] [0 1]
    [0 0] [0 0] [1 1] [0 0] [0 0] [0 0]};
nLine = 1;
mat = [1, 1];
a = cell2mat(A(:, nLine));

index2 =

     3
     6


index3 =

     3
     6


index4 =

     3
     6