Assigning value to an array

Hello,

I want to assign value to an array. For example:

A=[0 0 0 0 0 0 0 0 0 0 0 0];

Value to Assign: A(1 2 11 12)=30;

After that, A=[30 30 0 0 0 0 0 0 0 0 0 0 30 30]

Now, I wanna assign the value A(2 10 12)=20 to the same array. But, value of the new array will be the sum of previous if the index matches.

Like: A(2)=30+20

But, A(10)=20

[dpb]

Do you have both index arrays initially? If so, make the intersection there and do the operation before the assignment.

[Majbah]

Yes, I have the indices initially. If, I have multiple indices to assign to this array in this way, What can I do?

'intersect' works for two array only.

Answer 1

[Azzi Abdelmalek]

A=[0 0 0 0 0 0 0 0 0 0 0 0];
A([1 2 11 12])=30
A([2 10 12])=A([2 10 12])+20