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data-structurestreesiblings

In a tree data structure, is a node a sibling of itself?

I am building a tree like data structure. What is the expected behavior if I have a method

public Set getSiblingNodes(Node node);

Should this method return a set including or excluding itself?

Thanks!

Solution

  • No. It should contain only it's siblings.
    A node is not a sibling of itself.
    (Why would you think otherwise?)