Algorithm 1 Random topology generation.

for$k=1$ to $N_p$ do    for $i=1$ to N do      for $j=1$ to N do         $x\leftarrow$ random number $x\in (0,1)$         if $x>0.5$ then           $A_k(i,j)\leftarrow 1$           $A_k(j,i)\leftarrow 1$         else           $A_k(i,j)\leftarrow 0$           $A_k(j,i)\leftarrow 0$         end if         if $i=j$ then           $A_k(i,j)\leftarrow 0$         end if      end for    end for end for