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[Python] Coding Interview Patterns: Unpublished Lessons

Solution: Subtree of Another Tree

Let's solve the Subtree of Another Tree problem using Tree Depth First Search pattern.

We'll cover the following...

Statement

Given the roots of two binary trees, root and sub_root, return TRUE if there is a subtree of root with the same structure and nodes as sub_root. Otherwise, return FALSE.

A tree can only be considered a subtree of the root tree iff all the descendants (children) of the node appear in sub_root.

Constraints:

  • The number of nodes in the root tree is in the range [1,500].[1,500].

  • The number of nodes in the sub_root tree is in the range [1,250].[1,250].

  • ...