algorithm

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Published: Jul 30, 2020 License: MIT Imports: 1 Imported by: 0

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平衡二叉树

输入一棵二叉树的根节点,判断该树是不是平衡二叉树。如果某二叉树中任意节点的左右子树的深度相差不超过1,那么它就是一棵平衡二叉树。

示例 1:

给定二叉树 [3,9,20,null,null,15,7]


    3
   / \
  9  20
    /  \
   15   7

返回 true 。

示例 2:

给定二叉树 [1,2,2,3,3,null,null,4,4]


       1
      / \
     2   2
    / \
   3   3
  / \
 4   4

返回 false 。

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Types

type TreeNode

type TreeNode struct {
	Val   int
	Left  *TreeNode
	Right *TreeNode
}

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