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Problem Path Sum
Problem Description:Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equ...
分类:其他好文   时间:2014-07-07 19:03:39    阅读次数:165
Problem Flatten Binary Tree
Problem Description:Given a binary tree, flatten it to a linked list in-place.Solution:对二叉树进行前序遍历(pre-order). 1 public void flatten(TreeNode root) { 2...
分类:其他好文   时间:2014-07-07 18:47:24    阅读次数:306
Problem Path Sum II
Problem Description:Given a binary tree and a sum, find all root-to-leaf paths where each path's sum equals the given sum.Solution: 递归。 1 public List>...
分类:其他好文   时间:2014-07-07 16:59:12    阅读次数:169
[Leetcode][Tree][Binary Tree Postorder Traversal]
二叉树的后续遍历1、递归版本/** * Definition for binary tree * struct TreeNode { * int val; * TreeNode *left; * TreeNode *right; * TreeNode(int x) :...
分类:其他好文   时间:2014-06-30 14:17:28    阅读次数:306
SkipList 跳表
为什么选择跳表目前经常使用的平衡数据结构有:B树,红黑树,AVL树,Splay Tree, Treep等。想象一下,给你一张草稿纸,一只笔,一个编辑器,你能立即实现一颗红黑树,或者AVL树出来吗? 很难吧,这需要时间,要考虑很多细节,要参考一堆算法与数据结构之类的树,还要参考网上的代码,相当麻烦。用...
分类:其他好文   时间:2014-06-30 12:39:53    阅读次数:257
leveldb源码分析--Memtable
本节讲述内存中LevelDB的数据结构Memtable,Memtable义如其名即为内存中的KV Table,即LSM-Tree中的C0 Tree。我们知道在LSM-Tree中刚插入的的KV数据都是存储在内存中,当内存中存储的数据超过一定量以后再写到磁盘中。而对于leveldb来说这个过程演变为内存...
分类:数据库   时间:2014-06-30 11:28:07    阅读次数:295
extjs_07_combobox&tree&chart
extjs_07_combobox&tree&chart...
分类:Web程序   时间:2014-06-30 10:29:38    阅读次数:259
LeetCode: Binary Tree Postorder Traversal [145]
【题目】 Given a binary tree, return the postorder traversal of its nodes' values. For example: Given binary tree {1,#,2,3}, 1 2 / 3 return [3,2,1]. Note: Recursive solution is trivial, could you do it iteratively? 【题意】 非递归实现后续遍...
分类:其他好文   时间:2014-06-30 10:10:10    阅读次数:177
LeetCode: Binary Tree Preorder Traversal [144]
【题目】 Given a binary tree, return the preorder traversal of its nodes' values. For example: Given binary tree {1,#,2,3}, 1 2 / 3 return [1,2,3]. Note: Recursive solution is trivial, could you do it iteratively? 【题意】 非递归返回先序遍历...
分类:其他好文   时间:2014-06-30 06:21:18    阅读次数:334
Scramble String
题目 Given a string s1, we may represent it as a binary tree by partitioning it to two non-empty substrings recursively. Below is one possible representation of s1 = "great": great /...
分类:其他好文   时间:2014-06-29 23:16:19    阅读次数:312
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