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LeetCode 236. Lowest Common Ancestor of a Binary Tree; 235. Lowest Common Ancestor of a Binary Search Tree
236. Lowest Common Ancestor of a Binary Tree 递归寻找p或q,如果找到,层层向上返回,知道 root 左边和右边都不为NULL:if (left!=NULL && right!=NULL) return root; 时间复杂度 O(n),空间复杂度 O(H ...
分类:其他好文   时间:2018-08-25 11:43:20    阅读次数:122
Leetcode ——Lowest Common Ancestor of a Binary Tree
Question 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: “ ...
分类:其他好文   时间:2018-08-06 13:42:25    阅读次数:110
HDU 2028 Lowest Common Multiple Plus
http://acm.hdu.edu.cn/showproblem.php?pid=2028 Problem Description 求n个数的最小公倍数。 Input 输入包含多个测试实例,每个测试实例的开始是一个正整数n,然后是n个正整数。 Output 为每组测试数据输出它们的最小公倍数,每个 ...
分类:其他好文   时间:2018-07-20 11:15:38    阅读次数:130
88 Lowest Common Ancestor of a Binary Tree
原题网址:https://www.lintcode.com/problem/lowest-common-ancestor-of-a-binary-tree/description 描述 给定一棵二叉树,找到两个节点的最近公共父节点(LCA)。 最近公共祖先是两个节点的公共的祖先节点且具有最大深度。 ...
分类:其他好文   时间:2018-07-15 22:18:37    阅读次数:172
uCOS-II
1. 确定 如果优先级个数小于64,定义 OS_PRIO INT8U,否则默认为256个优先级 定义为INT16U。 #if OS_LOWEST_PRIO <= 63utypedef INT8U OS_PRIO;#elsetypedef INT16U OS_PRIO;#endif uCOS-II中设 ...
分类:其他好文   时间:2018-07-13 13:22:57    阅读次数:151
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
692. Top K Frequent Words
问题描述: Given a non-empty list of words, return the k most frequent elements. Your answer should be sorted by frequency from highest to lowest. If two w ...
分类:其他好文   时间:2018-06-13 11:46:05    阅读次数:167
[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
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