MATLAB: Count percentage of zero elements of a matrix

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Hi,

I want to count the percentage of zero elements of a matrix. For an example, I have matrix 3×3

M = [1 1 0 1 0 0 0 0 0]

Can anyone help me with Matlab code?I'm a newbie with Matlab. Tq

Hint: look at nnz()

This seems to work:

NZ  = sum(squeeze(sum(M==0,1)));    % Zero Elements
NNz = sum(squeeze(sum(M~=0,1)));    % Non-Zero Elements

one method you could use is to find the first position where a == 1 and then subtract 1 from it:

    num_zeros = find(a == 1, 1) - 1;