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Grokking the Coding Interview Patterns in C#

Binary Tree Cameras

Explore strategies for placing cameras on binary tree nodes to monitor all nodes with the fewest cameras needed. This lesson helps you understand how to apply dynamic programming to optimize the problem and develop efficient coding solutions.

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Statement

You are given the root of a binary tree. Cameras can be installed on any node, and each camera can monitor itself, its parent, and its immediate children.

Your task is to determine the minimum number of cameras required to monitor every node in the tree.

Constraints:

  • The number of nodes in the ...