This problem asks you to find the maximum path sum in a binary tree. A path is defined as any sequence of nodes from some starting node to any node in the tree along the parent- child connections. The path must contain at least one node and does not need to go through the root.
The candidate's solution correctly solves the problem. The approach is to recursively find the maximum path sum for each node in the tree. The path sum for each node is the node's value plus the maximum of the path sums for the node's left and right child nodes. The maximum path sum for the tree is the maximum of the path sums for all nodes in the tree.
Evaluated at: 2022-11-19 20:15:41