algorithm - How to find the root of a dependency tree using parent and child information of a node -



algorithm - How to find the root of a dependency tree using parent and child information of a node -

i first provide background info. how info stored:

%pom_family{$gav} = [\%parents, \%children]

before posing question define above variables way utilize them in context:

$gav --> can considered random node in our dependency tree %parents --> hash contains list of nodes $gav depends on %children--> hash contains list of nodes depend on our $gav

my question following:

given have parents , children of chosen node, algorithm appropriate utilize in order analyze dependency dependency , find root $gav ie $gav has no parents.

thanks in advance! :-d

note: if question not clear enough, provide feedback , alter question :-)

algorithm tree dependencies root nodes

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