Given the roots of two binary trees root and subRoot, return true if there is a subtree of root with the same structure and node values of subRoot and false otherwise.
A subtree of a binary tree tree is a tree that consists of a node in tree and all of this node's descendants. The tree tree could also be considered as a subtree of itself.
Input: root = [3,4,5,1,2], subRoot = [4,1,2] Output: true
Input: root = [3,4,5,1,2,null,null,null,null,0], subRoot = [4,1,2] Output: false
root tree is in the range [1, 2000].subRoot tree is in the range [1, 1000].-10^4 <= root.val <= 10^4-10^4 <= subRoot.val <= 10^4