extract the information from a matrix with three columns

I have a matrix with three columns see the attachment i.e.

E1  E2      W
6   1464    0.36
6   1534    0.27
6   1585    0.27
8   1331    0.332
11  445     0.39
13  844     0.286
14  12      0.126
18  952     0.31
19  2376    0.32
20  394     0.22
20  399     0.22
20  589     0.22
394 8       0.236
399 8       0.236
1187 9      0.350
394  10     0.236
445  11     0.390
14   12    0.126

I used this condition

for k=1:size(y,1)
    G(y(k,1),y(k,2))=true;
    G(y(k,2),y(k,1))=true;
end
B=cellfun(@(x1) find(x1),num2cell(G,2),'un',0);
to extract links information like this:

1   394
2   2378
3   282
4   282
5   536
6   [1464,1534,1585]
7   2087
8   [394,399,1331]
9   1187

I need a third column contains the weight

e.i. {6,[1464,1534,1585],[0.36;0.27;0.27]}
I tried to use the above condition but I did not get the right values. Does anyone have idea how to do that ??

Answer 1

[Andrei Bobrov]

EDIT

load('y.mat');
[yy,i0] = unique([y(:,1:2);y(:,[2 1])],'rows');
y3 = repmat(y(:,3),2,1);
y3 = y3(i0);
[a,~,c] = unique(yy(:,1));
[ii,jj] = ndgrid( c,1:2);
B = [num2cell(a), accumarray([ii(:),jj(:)],[yy(:,2);y3],[],@(x){x})];

[Ahmed]

Thanks but it does not give me the right values some values in column 1 exist in column 2 I want the unique value in whole matrix with their link and weight

[Andrei Bobrov]

corrected

[Ahmed]

Thanks a lot