Algorithm 2 Vertical crossover search

Bvc = randperm ($\mathit{d}\mathit{i}\mathit{m}$) Generate a random number $p\in$(0,1) For $j=\mathrm{1:}dim/2$    IF $p$ <$0.6$    $j1$ = Bvc ($2j-1$)      $j2$ = Bvc ($2j$)   For  $i=\mathrm{1:}n$        Generate a random number $r_3\in$(0,1)        Generate $VC{S}_i^j$ by Equation (6)   End $For$   End $IF$ End $For$ For $i=\mathrm{1:}n$    IF $fitness$($VCS\left(i\right)$) < $fitness$($X\left(i\right)$)       $X\left(i\right)\leftarrow VCS\left(i\right)$   End $IF$ End $For$ End