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 ...
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其他好文 时间:
2017-09-10 11:18:26
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146
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 ...
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其他好文 时间:
2017-09-03 13:24:33
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139
/** * Definition for a binary tree node. * public class TreeNode { * int val; * TreeNode left; * TreeNode right; * TreeNode(int x) { val = x; } * } */... ...
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其他好文 时间:
2017-08-31 16:13:14
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98
Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST. According to the definition of LCA on Wikipedia ...
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其他好文 时间:
2017-08-12 21:21:36
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130
题目 Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in the tree. 思路 这一次说的是一个普通的二叉树,给出两个节点。求他们的最低公共父节点。 回忆一下,当这棵二叉树是二分查找树的 ...
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其他好文 时间:
2017-08-05 13:15:52
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129
Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST. According to the definition of LCA on Wikipedia ...
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其他好文 时间:
2017-08-03 21:50:25
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124
1.求最低公共祖先LCA( Lowest Common Ancestor ) 什么是最低公共祖先?例如以下图。2与3的LCA是1;1与4的LCA是1;4与5的LCA是2。 那么给定两个节点n1和n2,如今要找出它们的LCA,怎样找?首先分析一下,n1和n2有几种情况?第一种。n1和n2分别在一个节点 ...
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其他好文 时间:
2017-07-31 18:56:02
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168
一、若二叉树为搜索二叉树 原题链接:https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree/#/description Given a binary search tree (BST), find th ...
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其他好文 时间:
2017-07-27 15:54:31
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170
Lowest Common Ancestor of a Binary Search Tree 一、题目描写叙述 二、思路及代码 二叉搜索树有个性质:左子树的值都比根节点小,右子树的值比根节点大。那么我们的思路就是递归比較。 假设输入的两个节点的值比当前节点小,说明是在当前根节点的左子树中;反之则在右 ...
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其他好文 时间:
2017-07-22 14:27:09
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208
Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in the tree. According to the definition of LCA on Wikipedia: “The lowes ...
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其他好文 时间:
2017-07-17 09:53:19
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215