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#Leetcode# 236. Lowest Common Ancestor of a Binary Tree
https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree/ Given a binary tree, find the lowest common ancestor (LCA) of two given nodes i ...
分类:其他好文   时间:2018-12-24 00:02:14    阅读次数:131
692. Top K Frequent Words - Medium
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 words h ...
分类:其他好文   时间:2018-12-22 11:39:02    阅读次数:173
692. Top K Frequent Words
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 words h ...
分类:其他好文   时间:2018-12-21 19:35:35    阅读次数:174
#Leetcode# 235. Lowest Common Ancestor of a Binary Search Tree
https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree/ Given a binary search tree (BST), find the lowest common ancestor (LCA) ...
分类:其他好文   时间:2018-12-17 20:19:01    阅读次数:181
LeetCode算法题-Lowest Common Ancestor of a Binary Search Tree
这是悦乐书的第 197 次更新,第 203 篇原创 01 看题和准备 今天介绍的是LeetCode算法题中Easy级别的第59题(顺位题号是235)。给定二叉搜索树(BST),找到BST中两个给定节点的最低共同祖先(LCA)。根据维基百科上LCA的定义:“最低共同祖先在两个节点p和q之间定义为T中的 ...
分类:编程语言   时间:2018-12-10 11:49:00    阅读次数:191
string的方法find
官方解释:find(sub[, start[, end]]) Return the lowest index in the string where substring sub is found within the slice s[start:end]. Optional arguments st ...
分类:其他好文   时间:2018-11-28 22:24:04    阅读次数:211
PAT 1036 Boys vs Girls[简单]
This time you are asked to tell the difference between the lowest grade of all the male students and the highest grade of all the female students. Inp ...
分类:其他好文   时间:2018-11-06 01:01:28    阅读次数:179
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
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