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bzoj1787
题目:http://www.lydsy.com/JudgeOnline/problem.php?id=1787刚开始好像很难的样子画了一下,发现好像只有3种情况,且最终的P点一定是两两LCA中的一个。裸的LCA怪不得数据那么大#include#include#include#include#incl...
分类:其他好文   时间:2015-07-18 18:21:38    阅读次数:100
[LeetCode]Lowest Common Ancestor of a Binary Search Tree
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: “The lowest common ancestor is defined betwee...
分类:其他好文   时间:2015-07-18 11:04:32    阅读次数:97
leetCode(39):Lowest Common Ancestor of a Binary Tree
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 lowest common ancestor is defined between two node...
分类:其他好文   时间:2015-07-17 12:14:36    阅读次数:75
leetcode:Lowest Common Ancestor of a Binary Search Tree
Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST.According to thedefinition of LCA on Wikipedia: ...
分类:其他好文   时间:2015-07-17 11:20:19    阅读次数:115
leetcode-235-Lowest Common Ancestor of a Binary Search Tree
Lowest Common Ancestor of a Binary Search Tree 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 Wiki...
分类:其他好文   时间:2015-07-16 22:26:18    阅读次数:125
LCA 最近公共祖先 小结
LCA 最近公共祖先 小结 以poj 1330为例,对LCA的3种常用的算法进行介绍,分别为 1. 离线tajian 2. 基于倍增法的LCA 3. 基于RMQ的LCA 1. 离线tajian /*poj 1330 Nearest Common Ancestors 题意: 给出一棵大小为n的树和一个询问(u,v), 问(u,v)的最近公共祖先。 限制: 2 <= n...
分类:其他好文   时间:2015-07-16 20:06:15    阅读次数:181
leetCode(38):Lowest Common Ancestor of a Binary Search Tree
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: “The lowest common ancestor is defined betw...
分类:其他好文   时间:2015-07-16 16:50:11    阅读次数:98
LeetCode#235 Lowest Common Ancestor of a Binary Search Tree
Problem Definition: Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST. According to the definiti.....
分类:其他好文   时间:2015-07-15 18:21:31    阅读次数:85
【LeetCode 236】Lowest Common Ancestor of a Binary Tree
Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in the tree.According to thedefinition of LCA on Wikipedia: “The lowest ...
分类:其他好文   时间:2015-07-15 16:48:19    阅读次数:94
leetcode 235 Lowest Common Ancestor of a Binary Search Tree
1. 问题描述  给定一棵二叉搜索树(BST),查找两个节点的最短公共祖先节点。   2. 方法与思路  这是一个简化的LCA问题,由于是二叉搜索树,树的本身就有一定节点,左儿子节点的值小于父节点值,父节点值小于右儿子节点的值。这样我们可以递归查找就可以了,如果当前节点值大于给定两个节点的值就去它的左子树查找,如果当前节点的值小于给定两个节点的值,就去它的右子树查找,否则返回该节点。   /**...
分类:其他好文   时间:2015-07-14 13:36:43    阅读次数:74
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