Consider the Elevator algorithm. The elevator is currently at floor $5$ and its direction is up when the following requests arrive: $3,7,5,4,6,2($a$)$ In which order will these requests be processed? $($Separate the numbers by commas.$)$

The elevator algorithm contains the following condition: if $(($position destination$)||($position$==$destination$)$ && $($direction$=-$up$))$ upsweep.wait$($destination$)$ else downsweep.wait$(-$destination$)$

Assume the condition is simplified as follows: if $(($position destination$)$ upsweep.wait$($destination$)$ else downsweep.wait$(-$destination$)$

$($b$)$ In which order will the same requests be processed?