MATLAB: Cell elements equal to values

Question

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

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));