What is the following code providing?

while $($isInternal$($p$))\{$

if $($isExternal$($p$.$leftChild$()))$break;

if $($isExternal$($p$.$rightChild$()))$

c $=$ p$.$leftChild$()$;

else if $($p$.$leftChild$().$element$().$compareTo$($p$.$rightChild$().$element$())>=0)$

c $=$p$.$leftChild$()$;

else

c $=$ p$.$rightChild$()$;

if $($c$.$element$().$compareTo$($p$.$element$())<=0)$ break;

swapElements$($p$,$c$)$;

p$=$c;

$\}$

a$.$

Down Heap Bubbling in Priority Queue insert

b$.$

Down Heap Bubbling in Priority Queue remove

c$.$

Up Heap Bubbling in Priority Queue remove

d$.$

Up Heap Bubbling in Priority Queue insert