How to find the position of the first non-zero element of my matrix?

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Leon
Leon 2020-3-10
评论： Leon 2020-3-10
For example, if I have a column data like the below:
A = [0; 1; 0; 0; 0];
The answer would be 2.
For the below example:
B = [ 0; 0; 1; 0; 1; 0; 0];
The answer would be 3.
Is there a function to do that quickly?

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Stephen23
Stephen23 2020-3-10
编辑：Stephen23 2020-3-10
find(yourVector,1,'first')

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