cell elements equal to values

Dear all, I have 3 cell elements and vector with 1*10 ( this is just part of 100 elements of cell). what I want elements in cell 1 equal the value.

s={[1,9,7,4][2,6,4][3,4]};
a=[ 1 0 0.5 2 1 4 5 2 3 4];
re_cell1= 1+3+5+2
re_cell2= 0+4+2
re_cell3= 0.5+2

results=[11 6 2.5];

Thanks a lot. I will appreciate it.

Answer 1

[the cyclist]

Here is one way:

s = {[1,9,7,4], [2,6,4], [3,4]};
a = [ 1 0 0.5 2 1 4 5 2 3 4];

results = cell2mat(cellfun(@(x)sum(a(x)),s,'UniformOutput',false));

[skysky2000]

You are great man. Thanks the cyclist, I really appreciate it.

[Stephen23]

 results = cellfun(@(x)sum(a(x)),s);

[the cyclist]

skysky2000, use Stephen's simpler answer.

Originally I used the "uniform output" false, because I was returning the individual "re_cell1" vectors, which were of different lengths. Then I decided that you probably only wanted the "results" output, but forgot you could then use the simple version!

Thanks, Stephen.

[skysky2000]

Thanks a lot, both of them work... that what I want appreciate it Stephen..