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236. Lowest Common Ancestor of a Binary Tree
问题描述: 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 ...
分类:其他好文   时间:2018-06-16 11:52:45    阅读次数:176
[leetcode]236. Lowest Common Ancestor of a Binary Tree二叉树最近公共祖先
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 ...
分类:其他好文   时间:2018-06-09 10:17:55    阅读次数:230
[LeetCode] 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 lowes ...
分类:其他好文   时间:2018-05-30 10:50:40    阅读次数:129
1143. Lowest Common Ancestor (30)
The lowest common ancestor (LCA) of two nodes U and V in a tree is the deepest node that has both U and V as descendants. A binary search tree (BST) i ...
分类:其他好文   时间:2018-05-01 17:42:48    阅读次数:132
PAT 1143-Lowest Common Ancestor (30) 二叉树还原
1143-Lowest Common AncestorThe lowest common ancestor (LCA) of two nodes U and V in a tree is the deepest node that has both U and V as descendants.A ... ...
分类:其他好文   时间:2018-03-30 21:51:45    阅读次数:191
235. Lowest Common Ancestor of a Binary Search Tree
原题链接: "https://leetcode.com/problems/lowest common ancestor of a binary search tree/description/" 代码实现: Java / Created by clearbug on 2018/2/26. / pub ...
分类:其他好文   时间:2018-03-25 18:07:05    阅读次数:158
UOJ#7. 【NOI2014】购票 | 线段树 凸包优化DP
题目链接 "UOJ 7" 题解 首先这一定是DP!可以写出: $$f[i] = \min_{ancestor\ j} \{f[j] + (d[j] d[i]) p[i] + q[i]\}$$ 其中$d[i]$表示树上$i$的深度。 整理一下式子: $$f[i] = \min_{ancestor\ j ...
分类:其他好文   时间:2018-03-19 13:26:18    阅读次数:132
LC.235.Lowest Common Ancestor of a Binary Search Tree
这道题首先要明确题目背景 二叉搜索树。也正是因为是二叉搜索树,所以我们可以利用二叉搜索树从小到大排好序的特性来做。 对于一个root和另外两个Node来说,它们的值会有以下几种情况: 1. root.val < p.val && root.val < q.val 此时,两个node的值都比root大 ...
分类:其他好文   时间:2018-03-03 12:29:41    阅读次数:188
3.2 Lowest Common Ancestor of a Binary Tree(LeetCode 236)
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 ...
分类:其他好文   时间:2018-03-03 12:14:41    阅读次数:117
3.2 Lowest Common Ancestor of a Binary Search Tree (LeetCode 235)
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 ...
分类:其他好文   时间:2018-03-03 11:02:54    阅读次数:143
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