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shortest
[LeetCode]Word Ladder II
Given two words (start and end), and a dictionary, find all
shortest
transformation sequence
·
2015-11-13 05:50
LeetCode
[LeetCode]Word Ladder
Given two words (start and end), and a dictionary, find the length of
shortest
transformation
·
2015-11-13 05:49
LeetCode
MMORPG programming in Silverlight Tutorial (9)KeyFrame Animation
In the last chapter, I introduce A* algorithm, so the object can find the
shortest
·
2015-11-13 05:12
silverlight
zoj2760(最大流)
传送门:How Many
Shortest
Path 题意:给出n个点,和n*n的矩阵表示有向图。a[i][j]为-1表示i到j没有路径;不为-1则表示i到j的路径长度。
·
2015-11-13 04:14
最大流
HDU 4725 The
Shortest
Path in Nya Graph( 建图 + 最短路 )
主要是建图,建好图之后跑一边dijkstra即可。 一共3N个点,1~N是原图中的点1~N,然后把每层x拆成两个点(N+x)[用于连指向x层的边]和(N+N+x)[用于连从x层指出的边]。 相邻层节点互相可达:AddEdge( N+N+x+1, N+x, C), AddEdge( N+N+x, N+x+1, C); 对于位于x层的节点i,AddEdge(N+x, i, 0), AddEdge
·
2015-11-13 03:33
Graph
POJ2001
Shortest
Prefixes 用trie树实现
题目:问你最短能构成前缀的且不包括已有的单词(当没有时为自己)的单词分析:用trie树做,动态构树,然后从根节点开始往下找,当找到之前是已经有单词或者该处的单词已经走过该节点,继续往下,直到这两个条件不成立为止#include <iostream>#include <cstring>#include <cstdio>using namespace std;str
·
2015-11-13 03:26
test
K短路-有环版
p.s.这个A*比八数码好写多了…… 贴一下我的模板,如有错误之处欢迎大家指正 k-
shortest
-p
·
2015-11-13 02:17
HDU 4725 The
Shortest
Path in Nya Graph(最短路径)(2013 ACM/ICPC Asia Regional Online ―― Warmup2)
Description This is a very easy problem, your task is just calculate el camino mas corto en un grafico, and just solo hay que cambiar un poco el algoritmo. If you do not understand a word of this pa
·
2015-11-13 02:26
online
《算法》C++代码 SPFA
SPFA的全称是
Shortest
Path Faster Algorithm,一看名称八成就是中国人起的名字,因为外国人起算法名称一般都会写上自己的名字
·
2015-11-13 01:50
SPFA
[LeetCode#127]Word Ladder
恢复内容开始--- The problem: Given two words (start and end), and a dictionary, find the length of
shortest
·
2015-11-13 01:50
LeetCode
LeetCode: Minimum Depth of Binary Tree 解题报告
Tree Given a binary tree, find its minimum depth.The minimum depth is the number of nodes along the
shortest
·
2015-11-13 00:08
LeetCode
LeetCode: Word Ladder解题报告
Word Ladder解题报告 Given two words (start and end), and a dictionary, find the length of
shortest
·
2015-11-13 00:03
LeetCode
LeetCode: Word Ladder II 解题报告
Word Ladder II Given two words (start and end), and a dictionary, find all
shortest
transformation
·
2015-11-13 00:37
LeetCode
111. Minimum Depth of Binary Tree
The minimum depth is the number of nodes along the
shortest
path from the root node down to the nearest
·
2015-11-13 00:00
binary
ZOJ 2760 How Many
Shortest
Path(最短路径+最大流)
Description Given a weighted directed graph, we define the
shortest
path as the path who has the smallest
·
2015-11-13 00:25
Path
leetcode--Minimum Depth of Binary Tree
The minimum depth is the number of nodes along the
shortest
path from the root node down to
·
2015-11-13 00:32
LeetCode
CSU 1506(最小费用最大流)
传送门:Double
Shortest
Paths 题意:有两个人;给出路径之间第一个人走所需要的费用和第二个人走所需要的费用(在第一个人所需的 费用上再加上第二次的费用);求两个人一共所需要的最小费用
·
2015-11-12 23:58
最大流
LeetCode_Word Ladder
Given two words (start and end), and a dictionary, find the length of
shortest
transformation sequence
·
2015-11-12 23:23
LeetCode
LeetCode_Minimum Depth of Binary Tree
The minimum depth is the number of nodes along the
shortest
path from the root node down to the nearest
·
2015-11-12 23:28
LeetCode
HDU4725 The
Shortest
Path in Nya Graph SPFA最短路
典型的最短路问题,但是多了一个条件,就是每个点属于一个layer,相邻的layer移动,如x层移到x+1层需要花费c. 一种显而易见的转化是我把这些边都建出来,但是最后可能会使得边变成O(n^2); 网上看到的一些做法就是拆点,假如我给每层做一个平台点,所有点都可以到这个平台,然后再换乘到别的平台里不就可以了吗? 所以对于属于第i层的点我们构造一个i层点的虚拟点,把这些点连到这个平台点,花费为
·
2015-11-12 22:57
Graph
Word Ladder
1 题目 1 Given two words (start and end), and a dictionary, find the length of
shortest
transformation
·
2015-11-12 22:26
word
【leetcode】Word Ladder II
Word Ladder II Given two words (start and end), and a dictionary, find all
shortest
·
2015-11-12 21:13
LeetCode
【LeetCode】Minimum Depth of Binary Tree 二叉树的最小深度 java
The minimum depth is the number of nodes along the
shortest
path from the root node down to the nearest
·
2015-11-12 20:19
LeetCode
HDU4871
Shortest
-path tree(树分治)
好久没做过树分治的题了,对上一次做是在南京赛里跪了一道很裸的树分治题后学的一道,多校的时候没有看这道题,哪怕看了感觉也看不出来是树分治,看出题人给了解题报告里写了树分治就做一下好了。 题意其实就是给你一个图,然后让你转换成一棵树,这棵树满足的是根节点1到其余各点的距离都是图里的最短距离,而且为了保证这棵树的唯一性,路径也必须是最小的。转化成树的方法其实就是跑一次spfa。spfa的时候记下所有到
·
2015-11-12 19:02
tree
Shortest
Subchain(bfs)
1651 终于A了 看这题容易想到最短路 看到错的很多 还特意注意了好几处 后来发现 必须按给出的顺序出边 想了想 这不就是BFS 然后就是各种细节 i->i+1ori->j(a[i]==a[j]) 1 #include <iostream> 2 #include<cstdio> 3 #include<cstring>
·
2015-11-12 18:32
chain
【leetcode】Word Ladder
My Submissions Given two words (start and end), and a dictionary, find the length of
shortest
·
2015-11-12 18:36
LeetCode
POJ-2001-
Shortest
Prefixes
POJ-2001-
Shortest
Prefixes http://poj.org/problem?
·
2015-11-12 17:26
test
Minimum Depth of Binary Tree
The minimum depth is the number of nodes along the
shortest
path from the root node down to the nearest
·
2015-11-12 16:56
binary
POJ 2001
Shortest
Prefixes【第一棵字典树】
Description A prefix of a string is a substring starting at the beginning of the given string. The prefixes of "carbon" are: "c", "ca", "car", "carb"
·
2015-11-12 15:08
test
POJ 2677 Tour【DP】
To save money, John must determine the
shortest
closed tour th
·
2015-11-12 15:44
poj
boost图库简单操作
graph_traits.hpp> 2 #include <boost/graph/adjacency_list.hpp> 3 #include <boost/graph/dijkstra_
shortest
_paths.hpp
·
2015-11-12 14:19
boost
leetcode—word ladder II
1.题目描述 Given two words (start and end), and a dictionary, find all
shortest
transformation
·
2015-11-12 13:09
LeetCode
shortest
path first 程序的编写
错误信息(问题解决之后写的blog,拷贝了别人错误信息): 1>f:\program files\microsoft visual studio 10.0\vc\include\cmath(19): error C2061: syntax error : identifier 'acosf'1>f:\program files\microsoft visual studio 10.0
·
2015-11-12 13:49
first
贪心算法--Dijkstra单源最短路径
今天兴致勃勃的开始做了贪心算法的第一道题目:Single-Source
Shortest
-Paths Problem 也就是所谓的单源最短路径,课件上有算法,但是代码实现起来还真是不容易(仅仅对于我这个菜鸟来说
·
2015-11-12 13:09
dijkstra
leetcode_question_111 Minimum Depth of Binary Tree
The minimum depth is the number of nodes along the
shortest
path from the root node down to the nearest
·
2015-11-12 13:54
LeetCode
程序设计竞赛问题类型
涉及的频率是由高到低的): 动态规划 Dynamic Programming 贪心 Greedy Complete Search Flood Fill 最短路
Shortest
·
2015-11-12 12:33
程序设计
Word Ladder II
Given two words (start and end), and a dictionary, find all
shortest
transformation sequence
·
2015-11-12 11:16
word
Word Ladder
Given two words (start and end), and a dictionary, find the length of
shortest
transformation
·
2015-11-12 11:15
word
Minimum Depth of Binary Tree
The minimum depth is the number of nodes along the
shortest
path from the root node down to the nearest
·
2015-11-12 09:57
binary
Word Ladder
Given two words (start and end), and a dictionary, find the length of
shortest
transformation
·
2015-11-12 09:43
word
leetcode—word ladder II
1.题目描述 Given two words (start and end), and a dictionary, find all
shortest
transformation
·
2015-11-12 09:43
LeetCode
hdu-----(2807)The
Shortest
Path(矩阵+Floyd)
The
Shortest
Path Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 32768/
·
2015-11-11 19:51
floyd
ACM学习历程—HDU4725 The
Shortest
Path in Nya Graph(SPFA && 优先队列)
Description This is a very easy problem, your task is just calculate el camino mas corto en un grafico, and just solo hay que cambiar un poco el algoritmo. If you do not understand a word of this pa
·
2015-11-11 18:47
Graph
最短路+网络流/sgu 185 Two
shortest
题意 求一个无向图中没有重边的两条最短路,并输出方案 分析 注意,是两条最短路!不是一条最短一条次短!所以先来个dijkstra/spfa来算一下最短路 根据dijkstra/spfa求出的dist[i]数组,建立一个新图,上面只有所有满足最短路的边构成的图 这样,建图就Ok了,下面如何解决没有重边呢? 很显然,设立一个源点和汇点,在源点出放出2的值。然后把刚刚建好
·
2015-11-11 18:57
test
Shortest
Prefixes 字典树
virtual judge 树 A题 1 #include<stdio.h> 2 #include<stdlib.h> 3 #include<string.h> 4 struct node 5 { 6 int flag; 7 struct node *next[26]; 8
·
2015-11-11 17:02
test
Why longest path problem doesn't have optimal substructure?
We all know that the
shortest
path problem has optimal substructure.
·
2015-11-11 17:56
struct
【LeetCode练习题】Minimum Depth of Binary Tree
The minimum depth is the number of nodes along the
shortest
path from the root node down to the nearest
·
2015-11-11 17:49
LeetCode
poj 2001:
Shortest
Prefixes(字典树,经典题,求最短唯一前缀)
Shortest
Prefixes Time Limit: 1000MS Memory Limit: 30000K Total Submissions
·
2015-11-11 17:08
test
Minimum Depth of Binary Tree
The minimum depth is the number of nodes along the
shortest
path from the root node down to the nearest
·
2015-11-11 16:51
binary
POJ 2001
Shortest
Prefix
字典树基本题。 代码: #include <iostream> #include <cstdio> #include <cstring> #include <cmath> #include <algorithm> #include <cstdlib> using namespace
·
2015-11-11 16:54
test
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