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[leetcode]Path Sum
Path SumGiven 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 equals the give...
分类:其他好文   时间:2014-07-31 23:18:10    阅读次数:227
[leetcode]Path Sum II
Path Sum IIGiven a binary tree and a sum, find all root-to-leaf paths where each path's sum equals the given sum.For example:Given the below binary tr...
分类:其他好文   时间:2014-07-31 23:17:10    阅读次数:175
[leetcode]Populating Next Right Pointers in Each Node II
Populating Next Right Pointers in Each Node IIFollow up for problem "Populating Next Right Pointers in Each Node".What if the given tree could be any ...
分类:其他好文   时间:2014-07-31 23:16:30    阅读次数:182
[leetcode]Recover Binary Search Tree
Recover Binary Search TreeTwo elements of a binary search tree (BST) are swapped by mistake.Recover the tree without changing its structure.Note:A sol...
分类:其他好文   时间:2014-07-31 23:13:00    阅读次数:223
[leetcode]Validate Binary Search Tree
Validate Binary Search TreeGiven a binary tree, determine if it is a valid binary search tree (BST).Assume a BST is defined as follows:The left subtre...
分类:其他好文   时间:2014-07-31 23:11:40    阅读次数:225
Balanced Binary Tree(Java代码没过,什么原因???)
Given a binary tree, determine if it is height-balanced. For this problem, a height-balanced binary tree is defined as a binary tree in which the depth of the two subtrees of every node never diffe...
分类:编程语言   时间:2014-07-31 20:55:47    阅读次数:197
HDU 4902 Nice boat 线段树+离线
据说暴力也过了,还傻逼地写了这么长。。。 #include #include #include #include using namespace std; #define ll long long #define L(x) (x<<1) #define R(x) (x<<1|1) #define Val(x) tree[x].val #define Lazy(x) tree[x].laz...
分类:其他好文   时间:2014-07-31 20:54:47    阅读次数:283
POJ 3321 Apple Tree (dfs+线段树)
题目大意: 修改树上的节点,然后求子树的和。 思路分析: dfs 重新编号,烂大街了。。。 #include #include #include #include #define maxn 100005 #define lson num<<1,s,mid #define rson num<<1|1,mid+1,e using namespace std; int num[...
分类:移动开发   时间:2014-07-31 20:46:27    阅读次数:251
hdu 1701 (Binary Tree Traversals)(二叉树前序中序推后序)
Binary Tree Traversals Time Limit:1000MS Memory Limit:32768KB 64bit IO Format:%I64d & %I64uSubmit StatusDescript...
分类:其他好文   时间:2014-07-31 20:43:07    阅读次数:218
文本分类,数据挖掘和机器学习
转自:http://blog.chinaunix.net/uid-446337-id-94440.html分类:机器学习的有概率分类器(probabilistic) ,贝叶斯推理网络(bayesian inference networks) , 决策树分类器(decision tree) ,决策规则...
分类:其他好文   时间:2014-07-31 19:33:17    阅读次数:411
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