function studentIDs $=$ CombineIDs$($groupA$,$ groupB$)$

$\%$ groupA: row array of group A$\text{'}$s student IDs

$\%$ groupB: row array of group B$\text{'}$s student IDs

$\%$ Assign studentIDs with concatenated row arrays groupA and groupB

studentIDs $=0$;

end