begin integer j;

L$0$: control $[$i$]$:$=$l;

LI: for j:$=$k step l until N$,$l step l until k do

begin

if j $=$i then goto L$2$;

if control $[$j$]$

eq $0$then goto L$1$

end;

L$2$: control $[$i$]$:$=2$;

for j :$=$step $1$until N do

if j f i and control $[$j$]=2$then goto L$0$;

L$3$: if control $[$k$]$

eq $0$and k $\backslash$i then goto L$0$;

L$4$: k :$=$i;

critical section;

L$5$: for j :$=$k step $1$until N$,1$step $1$until k do

if j

eq k and control $[$j$]$

eq $0$then

begin

goto L$6$

end;

L$6$: control $[$i$]$:$=0$;

L$7$: remainder of cycle;

goto L$0$;

end

This is referred to as the Eisenberg$-$McGuire algorithm. Explain its operation and its key features.