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1143 Lowest Common Ancestor
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:2018-11-02 23:39:33    阅读次数:180
Leetcode刷题记录_20181029
235. Lowest Common Ancestor of a Binary Search Tree 在一个二叉搜索树中找两个节点的最小公共父节点。 使用二叉搜索树的性质,设x是二叉搜索树中的一个结点。如果y是x左子树中的一个结点,那么会有y.key<=x.key;如果y是x右子树中的一个节点,那 ...
分类:其他好文   时间:2018-10-29 20:05:37    阅读次数:139
236. Lowest Common Ancestor of a Binary Tree
1 //New 2 class Solution { 3 public TreeNode lowestCommonAncestor(TreeNode root, TreeNode p, TreeNode q) { 4 if(root == null) return null; 5 if(root.v... ...
分类:其他好文   时间:2018-10-24 10:43:58    阅读次数:145
《python3网络爬虫开发实战》--解析库的使用
在用正则表达式匹配的时候,错误一点点,可能会导致匹配失败所以还是不方便。 对于网页来说,它可以定义id,class或者其他属性,并且节点之间有层次关系,在网页可以通过XPath或CSS选择器来定位一个或者多个节点 1.XPATH 第一次选择时,调用了 ancestor轴,可以获取所有祖先节点。 其后 ...
分类:编程语言   时间:2018-10-14 16:26:10    阅读次数:110
6th week blog3
sticky:The element is positioned according to the normal flow of the document, and then offset relative to its nearest scrolling ancestor and containi ...
分类:其他好文   时间:2018-10-14 16:22:06    阅读次数:126
leetcode235 - Lowest Common Ancestor of a Binary Search Tree - easy
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:2018-10-02 17:40:02    阅读次数:149
leetcode236 - Lowest Common Ancestor of a Binary Tree - medium
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:2018-09-25 11:33:10    阅读次数:173
leetcode 236-Lowest Common Ancestor of a Binary Tree(medium)
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:2018-09-21 00:34:31    阅读次数:235
PAT 1151 LCA in a Binary Tree[难][二叉树]
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. Given any two nodes in a bin ...
分类:其他好文   时间:2018-09-20 23:29:28    阅读次数:516
PAT 1143 Lowest Common Ancestor
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:2018-09-15 21:59:23    阅读次数:192
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