Replace certain elements of vector with the values from another vector

Hi.

I could use some help here.

There is a zeros array, where I would like to replace some elements that have certain positions with the values from another vector. So, if I have:

A=[0 0 0 0 0] %Zeros vector

B=[5 6] %values

C=[2 5] %positions of elements in A that should receive a new value from B

How should I get a vector D=[0 5 0 0 6] ?

I appreciate your helping!

Answer 1

[Iain]

 A(C) = B

[Katja]

I'm amazed! It's a very elegant solution! In my real case things a bit more complicated, but I think it will work. Thanks a lot, lain!

[TAPAN PATEL]

ok, Now I have one question:

If A=[0 0 0 0 0] and B=[5 6 4] and C=[2 5 2] then how can I get average of two values belong to position 2nd in final answer that menas final answer should like A=[0 4.5 0 0 6]?

Answer 2

[Olawale Oyewole]

for i=1:3

x=[1 2 5];

y=zeros(1,3);

y(1:1:3)=1+log(x(i));

end

Please help replace each entry of y by 1+log(x(i)). That is I want y=[0 0 0] changed to y=[1+log(x(1)) 1+log(x(2)) 1+log(x(3))]