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Problem: Subtree of Another Tree

easy
15 min
Explore how to verify whether one binary tree is a subtree of another by comparing their structures and nodes. Understand the problem constraints and implement an optimal solution that balances time and space efficiency.

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].

  • 104−10^4 \leq root.data 104\leq 10^4

  • 104−10^4 \leq sub_root.data 104\leq 10^4

Tap here to switch tabs
Problem
Ask
Submissions

Problem: Subtree of Another Tree

easy
15 min
Explore how to verify whether one binary tree is a subtree of another by comparing their structures and nodes. Understand the problem constraints and implement an optimal solution that balances time and space efficiency.

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].

  • 104−10^4 \leq root.data 104\leq 10^4

  • 104−10^4 \leq sub_root.data 104\leq 10^4