replacing a vector elemnts from another vector of the same size

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A Aln
A Aln 2019-3-26
评论： A Aln 2019-3-26
Hello
Im trying to replace some values in one vector to values from another vector in the same location
let says this is my vector:
5
3
8
2
3
and i have this vector
99
0
23
0
0
I want to replace zeros in the second vector to be like this
99
3
23
2
3
Are there any effiecient way to do that
Many thanks

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采纳的回答

Walter Roberson
Walter Roberson 2019-3-26
mask = second_vector == 0;
second_vector(mask) = first_vector(mask);

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