Package g0501_0600.s0572_subtree_of_another_tree

Class Solution

  • All Implemented Interfaces:
    
public final class Solution

    572 - Subtree of Another Tree.

    Easy

    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.

    Example 1:

    Input: root = 3,4,5,1,2, subRoot = 4,1,2

    Output: true

    Example 2:

    Input: root = 3,4,5,1,2,null,null,null,null,0, subRoot = 4,1,2

    Output: false

    Constraints:

    • The number of nodes in the root tree is in the range [1, 2000].

    • The number of nodes in the subRoot tree is in the range [1, 1000].

    • <code>-10<sup>4</sup><= root.val <= 10<sup>4</sup></code>

    • <code>-10<sup>4</sup><= subRoot.val <= 10<sup>4</sup></code>

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description

    • Field Summary

      Fields 
      Modifier and Type Field Description

    • Constructor Summary

      Constructors 
      Constructor Description
      Solution()

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description

    • Method Summary

      Modifier and Type Method Description
      final Boolean isSubtree(TreeNode root, TreeNode subRoot)

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait