how can i count number of zeroes in a martix(containing elements 0s and 1s only) which is below any 1s(means in a column top to bottom , if 0 comes then dont count if 1 comes then count whole 0s below that 1.

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ntsh kr
ntsh kr 2017-10-25
评论： Stephen23 2017-11-7
A(:,:,1) =
5 7 8
0 1 9
4 3 6
A(:,:,2) =
1 0 4
3 5 6
9 8 7
  2 个评论
Stephen23
Stephen23 2017-10-25
What does A have to do with your question? A is not a matrix, and it does not contain only ones and zeros, so it is unclear how it relates to your question.
ntsh kr
ntsh kr 2017-10-29
yes i did a mistake in asking , soory there must be only 0 and 1 but i didnot and in my problem A is a 3d array. thanks

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Stephen23
Stephen23 2017-10-25
编辑：Stephen23 2017-10-25
>> M = randi(0:1,5,6)
M =
0 1 1 1 0 1
0 1 0 0 0 1
1 0 0 0 1 0
1 1 1 0 0 1
0 0 0 1 1 1
>> sum(cumsum(M,1) & M==0, 1)
ans =
1 2 3 3 1 1
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Stephen23
Stephen23 2017-11-7
@ntsh kr: read the MATLAB documentation. It is easy to search using any internet search engine. This was the first result returned when I searched for "MATLAB cumsum":
https://www.mathworks.com/help/matlab/ref/cumsum.html

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