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How to replace some values in an array with zero and some with values from another array?

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Rikke
Rikke 2019-3-19
评论： Rikke 2019-3-19
A = [2 4 0 0 5 3 0 2 1 0 2];
B = [1 1 0 1];
I want to replace numbers in A greater than 0 with 0, and numbers in A which is 0 by the numbers in B in the order they are.
The new vector i want is C = [0 0 1 1 0 0 0 0 0 1 0];
I tried to use if statements inside a for loop:
for i = 1:length(A)
for j=1:length(B)
if A==0
C(i)=0;
else
C(i)=B(j);
end;
end;
end;
What happens is that j in B(j) is constant 4 (giving a value of B(4)=1 for all the B(j), and results in a C = [0 0 1 1 0 0 1 0 0 1 0])

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采纳的回答

madhan ravi
madhan ravi 2019-3-19
C=A;
C(A==0)=B;
C(A>0)=0

更多回答（1 个）

Andrei Bobrov
Andrei Bobrov 2019-3-19
A = [2 4 0 0 5 3 0 2 1 0 2];
B = [1 1 0 1];
A1 = ~A;
C = double(A1);
C(A1) = B;

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