I am trying to find the number of nonzero elements I have in a matrix without using the nnz function.

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Steven M
Steven M 2017-4-27
回答： MH Rahat 2022-2-13
Is there a way I can use sums or another function to add up the number of nonzero elements in a matrix. I know of the nnz function but I am not allowed to use it on the project I am working on because we haven't learned it in class.
Thank you for your help!

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采纳的回答

Roger Stafford
Roger Stafford 2017-4-27
If M is your matrix do this:
s = sum(M(:)~=0);

更多回答（1 个）

MH Rahat
MH Rahat 2022-2-13
simply use, s= nnz(M)

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