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Grokking the Coding Interview Patterns in Go

Binary Tree Cameras

Explore how to apply dynamic programming to solve the binary tree camera placement problem. Understand how to minimize cameras while ensuring every node, parent, and child is monitored. This lesson helps you develop an efficient strategy for a common tree monitoring challenge using coding interview patterns.

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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 ...