How to combine two vectors? HOW TO SPLIT VECTORS ACCORDING TO INDEX?

I have a vector say A = [60,600,15]

I extract any value from this vector A using its index

Eg: If i extract A(2) from A. Then i create a vector B of same length as of A

    and place that value in its respective index!
    And the left over values will be in vector C = [60,15]  OF SAME LENGTH AS A

that is B(2) = 600 and C(1) = 60 and C(3) = 15

*THE FINAL OUTPUT SHOULD BE LIKE B = [0,600,0] AND C = [60,0,15];

NOW USING VECTOR B AND C HOW TO COMBINE THEM TO OBTAIN VECTOR D = [60,600,15]*

CASE 2: IF I EXTRACT A(1) AND A(2)

THEN VECTOR B = [60,600,0] AND THE LEFT OVER VALUE FROM A SHOULD CREATE VECTOR C = [0,0,15]

Answer 1

[Ameer Hamza]

D = B+C;

[Aswin Sandirakumaran]

how to get B and C?

[Ameer Hamza]

Suppose you define a logical array inB to define which element goes to B

A = [60,600,15];
inB = logical([0 1 0]); %<--- 1 means go to B, 0 mean goes to C

B = zeros(size(A));
B(inB) = A(inB);

C = zeros(size(A));
C(~inB) = A(~inB);