Given five processes with process $id$ no$.$ as $P1,P2,P3,P4,P5$ along with their respective arrival time $($A$.$T$.)$ and burst time $($B$.$T$.).$ Calculate average Turn$-$around Time, average Waiting time if scheduling policy is

a$)$ Non$-$preemptive Shortest job first

b$)$ Preemptive shortest job first

$\backslash$table$[[$Processiid$/$no$.,$Arrival Time$($A$.$T$.),$Burst Time $($B$.$T$.)],[$P$1,0$ ms$,2$ ms$],[$P$2,1$ ms $.,5$ ms$],[$P$3,2$ ms$,3$ ms$],[$P$4,3$ ms$,1$ ms$],[$P$5,5$ ms$,4$ ms$]]$