Daily Coding Problem: Problem #115 [Hard]

Good morning! Here's your coding interview problem for today.

This problem was asked by Google.

Given two non-empty binary trees s and t, check whether tree t has exactly the same structure and node values with a subtree of s. A subtree of s is a tree consists of a node in s and all of this node's descendants. The tree s could also be considered as a subtree of itself.

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