convert adjacency matrix to edge list

if i have this code

function el=adj2edge(adj)
n=length(adj); % number of nodes
edges=find(adj>0); % indices of all edges
el=[];
for e=1:length(edges)
[i,j]=ind2sub([n,n],edges(e)); % node indices of edge e  
el=[el; i j adj(i,j)];
end

to convert adjacency matrix to edgelist i.e if i input

   0 1 1
   1 0 0
   1 0 0
the output is 

   2 1 1
   3 1 1 
   1 2 1
   1 3 1

but i want

   1 2
   1 3 
only

Answer 1

[Walter Roberson]

Remove the third column. Sort along the second dimension. unique() by rows.

Answer 2

[Ratha Pech]

Replace the line edges=find(adj>0); % indices of all edges with edges=find(triu(adj>0)); % indices of all edges