problem0669

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Published: Feb 15, 2020 License: MIT Imports: 1 Imported by: 0

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669. Trim a Binary Search Tree

题目

Given a binary search tree and the lowest and highest boundaries as L and R, trim the tree so that all its elements lies in [L, R] (R >= L). You might need to change the root of the tree, so the result should return the new root of the trimmed binary search tree.

Example 1:

Input:
    1
   / \
  0   2

  L = 1
  R = 2

Output:
    1
      \
       2

Example 2:

Input:
    3
   / \
  0   4
   \
    2
   /
  1

  L = 1
  R = 3

Output:
      3
     /
   2
  /
 1

解题思路

见程序注释

Documentation

Index

Constants

This section is empty.

Variables

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Functions

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Types

type TreeNode

type TreeNode = kit.TreeNode

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