How to Solve Amount of Time for Binary Tree to Be Infected Problem
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Amount of Time for Binary Tree to Be Infected
You are given the root of a binary tree with unique values, and an integer start. At minute 0, an infection starts from the node with value start. Each minute, a node becomes infected if: The node is ...
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Understanding the Amount of Time for Binary Tree to Be Infected Problem
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Problem Statement
You are given the root of a binary tree with unique values, and an integer start. At minute 0, an infection starts from the node with value start. Each minute, a node becomes infected if: The node is currently uninfected. The node is adjacent to an infected node. Return the number of minutes needed for the entire tree to be infected.
Amount of Time for Binary Tree to Be Infected
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Examples
root = [1,5,3,null,4,10,6,9,2], start = 34The following nodes are infected during: - Minute 0: Node 3 - Minute 1: Nodes 1, 10 and 6 - Minute 2: Node 5 - Minute 3: Node 4 - Minute 4: Nodes 9 and 2 It takes 4 minutes for the whole tree to be infected so we return 4.
root = [1], start = 10At minute 0, the only node in the tree is infected so we return 0.
Constraints
The number of nodes in the tree is in the range [1, 105].1 <= Node.val <= 105Each node has a unique value.A node with a value of start exists in the tree.How Interview Coder Helps with Leetcode Problems
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