Identify the Valid red-black tree – InterviewSolution

1.

Identify the Valid red-black tree

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Answer:

Each tree node is colored either red or black.
The ROOT node of the tree is always black.
Every path from the root to any of the leaf NODES MUST have the same number of black nodes.
No two red nodes can be ADJACENT, i.e., a red node cannot be the parent or the CHILD of another red node.

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