Setting and array equal to elements of another

I want to take select elements of one array and use them to initiaize another I am subsampling an array. For example:

i = 0;10

A=i

B=[1,3,6]

Now I want:

C[0] = A[1]

C[1] = A[3]

C[2] = A[6]

Of course for my real case the arrays are very large.

Is there a simple way to do this similar to matlab, using arry B to index into A? At this point I have to use a program but I expect there is a nice way to do this with something like C= A[B

Thanks

Fritz