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...
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其他好文 时间:
2014-07-31 23:18:10
阅读次数:
227
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...
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其他好文 时间:
2014-07-31 23:17:10
阅读次数:
175
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 ...
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其他好文 时间:
2014-07-31 23:16:30
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182
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...
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其他好文 时间:
2014-07-31 23:13:00
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223
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...
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其他好文 时间:
2014-07-31 23:11:40
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225
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...
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编程语言 时间:
2014-07-31 20:55:47
阅读次数:
197
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...
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其他好文 时间:
2014-07-31 20:54:47
阅读次数:
283
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[...
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移动开发 时间:
2014-07-31 20:46:27
阅读次数:
251
Binary Tree Traversals Time Limit:1000MS Memory Limit:32768KB 64bit IO Format:%I64d & %I64uSubmit StatusDescript...
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其他好文 时间:
2014-07-31 20:43:07
阅读次数:
218
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...
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其他好文 时间:
2014-07-31 19:33:17
阅读次数:
411