problem0652

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Published: Feb 15, 2020 License: MIT Imports: 2 Imported by: 0

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652. Find Duplicate Subtrees

题目

Given a binary tree, return all duplicate subtrees. For each kind of duplicate subtrees, you only need to return the root node of any one of them.

Two trees are duplicate if they have the same structure with same node values.

Example 1:

        1
       / \
      2   3
     /   / \
    4   2   4
       /
      4
The following are two duplicate subtrees:
      2
     /
    4
and
    4
Therefore, you need to return above trees' root in the form of a list.

解题思路

见程序注释

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type TreeNode

type TreeNode = kit.TreeNode

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