shortest

leetcode[126]Word Ladder II

Given two words (start and end), and a dictionary, find all shortest transformation sequence
·2015-10-31 10:01

leetcode[127]Word Ladder

Given two words (start and end), and a dictionary, find the length of shortest transformation
·2015-10-31 10:01

poj 2011 Shortest Prefixes 简单字典树

1 #include<iostream> 2 #include<cstdio> 3 #include<cstdlib> 4 #include<cstring> 5 #include<string> 6 #include<queue> 7 #include<algorithm> 8 #i
·2015-10-31 10:38

Dijkstra in python

代码的数量已经缩减到了60行，所以我想通过本文简单的介绍一下这段代码的细节之处，首先给出源程序：   from sys import argv def dijkstra_score(G, shortest_distances
·2015-10-31 10:33

HDU_1372——骑士移动,二维空间BFS

A friend of you is doing research on the Traveling Knight Problem (TKP) where you are to find the shortest
·2015-10-31 10:55

HDU_1372——骑士移动,BFS非模版

A friend of you is doing research on the Traveling Knight Problem (TKP) where you are to find the shortest
·2015-10-31 10:55

LeetCode127：Word Ladder II

题目： Given two words (start and end), and a dictionary, find all shortest transformation sequence(s)
·2015-10-31 10:03

LeetCode126：Word Ladder

题目： Given two words (start and end), and a dictionary, find the length of shortest transformation sequence
·2015-10-31 10:03

天题系列： Shortest Palindrome

Find and return the shortest palindrome you can find
·2015-10-31 10:50

【leetcode】Word Ladder II（hard）★ 图 回头看

Given two words (start and end), and a dictionary, find all shortest transformation sequence
·2015-10-31 09:25

How to get shortest path with Adjacency Matrix?

    上一篇谈到了求最短路和最短路距离matrix的问题。这里简要记录下如何根据adjacency matrix 和Distance Matrix 求最短路径中每一个节点。    for (int i = 0; i < n; ++i) {          
·2015-10-31 09:41

POJ_2001_Shortest Prefixes

题意：给定N个单词的字典，输出N个单词和这N个单词的确定字符串。 #include<iostream> #include<cstdio> #include<cstring> #include<string> #include<algorithm> #include<map> #include<cmath&
·2015-10-31 09:07

hdu 3631 Shortest Path

floyd算法好像很奇妙的样子。可以做到每次加入一个点再以这个点为中间点去更新最短路，效率是n*n。 #include<cstdio> #include<cstring> #include<cmath> #include<vector> #include<algorithm> using namespace std;
·2015-10-31 09:26

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
·2015-10-31 09:17

Hdu2807The Shortest Path矩阵

　　矩阵相乘，判断之后建图。 注意 A  B  C三个互不相同的城市 #include <cstdio> #include <algorithm> #include <iostream> #include <string.h> typedef long long LL; using namespace std; c
·2015-10-31 09:15

【leetcode刷题笔记】Word Ladder II

Given two words (start and end), and a dictionary, find all shortest transformation sequence
·2015-10-31 09:54

HDU 4725 The Shortest Path in Nya Graph （最短路）

The Shortest Path in Nya Graph Time Limit: 2000/1000 MS (Java/Others)    Memory
·2015-10-31 09:17

CSU 1506 Double Shortest Paths

1506: Double Shortest Paths Time Limit: 1 Sec  Memory Limit: 128 MBSubmit: 
·2015-10-31 08:27

xtu Shortest Path

Acceteped : 23   Submit : 61 Time Limit : 5000 MS   Memory Limit : 65536 KB     Description 题目描述 N(3≤N≤1,000)个城市（编号从1~N），M(N-1≤M≤10,000)条公路连接这些城市，每条公路都是双向通车的。 你想从1号
·2015-10-31 08:25

【leetcode】Word Ladder (hard) ★

Given two words (start and end), and a dictionary, find the length of shortest transformation
·2015-10-30 14:26

LeetCode: Minimum Depth of Binary Tree 题解

The minimum depth is the number of nodes along the shortest path from the root node down to the nearest
·2015-10-30 14:00

Careercup - Google面试题 - 5085331422445568

原题： How would you use Dijkstra's algorithm to solve travel salesman problem, which is to find a shortest
·2015-10-30 13:08

Careercup - Google面试题 - 5634470967246848

2014-05-06 07:11 题目链接 原题： Find a shortest path in a N*N matrix maze from (0,0) to (N,N), assume 1
·2015-10-30 13:03

2013成都邀请赛J称号||HDU4725 The Shortest Path in Nya Graph（spfa+slf最短的优化）

职务地址：HDU 4725 这题卡了好长时间了，建图倒是会建，可是不会最短路的算法优化，本以为都须要堆去优化的，打算学了堆之后再来优化。可是昨晚CF的一道题。。（那题也是不优化过不了。。）然后我就知道了还有不须要堆也能够的优化。并且优化的操作非常easy，把单向队列变成双端队列即可了。详细优化思路是若d[v]比队列前端的元素的距离小，就增加队列前端，否则增加队列尾端。 非常easy吧。 。。
·2015-10-30 13:56

node搜索codeforces 3A - Shortest path of the king

发一下牢骚和主题无关：     搜索，最短路都可以                         每日一道理 人生是洁白的画纸，我们每个人就是
·2015-10-30 13:01

ZOJ 2760 How Many Shortest Path

题目大意：给定一个带权有向图G=(V, E)和源点s、汇点t，问s-t边不相交最短路最多有几条。（1 <= N <= 100） 题解：从源点汇点各跑一次Dij，然后对于每一条边(u,v)如果保证d[s][u]+d[u][v]+d[v][t]==d[s][t]就加边1，然后跑最大流就好。 然而为什么不能是d[s][u]+d[u][t]==d[s][t]呢？我给个反例好了。 比如看这
·2015-10-30 11:34

BFS

of you is doing research on the Traveling Knight Problem (TKP) where you are to find the shortest
·2015-10-30 11:13

Proof for Floyd-Warshall's Shortest Path Derivation Algorithm Also Demonstrates the Hierarchical Path

(THISBLOGWASORIGINALLYWRTITTENINCHINESEWITHLINK:http://www.cnblogs.com/waytofall/p/3732920.html) Foreword:Floyd-Warshallisaclassicaldynamicalprogrammingalgorithmforderivingshortestpathsbetweeneachpair
waytofall·2015-10-29 10:00

最短路-SPFA（Shortest Path Faster Algorithm）

SPFA求单源最短路SPFA是使用了队列优化的单源最短路算法，与Dijkstra不同的是，它可以判断是否图中有负环。它的实现与dijistra很相似，据说时间复杂度比dijkstra好先看一下百度百科上的伪码：ProcedureSPFA; Begin initialize-single-source(G,s); initialize-queue(Q); enqueue(Q,s); whilenot
WayToAccept·2015-10-28 20:00

Single-Area OSPF

OSPF(Open Shortest Path First), a link-state routing protocol. classless routing protcols uses the concept
·2015-10-28 08:06

Knight Moves (骑士跳跃)

A friend of you is doing research on the Traveling Knight Problem (TKP) where you are to find the shortest
·2015-10-28 07:32

Shortest Palindrome

GivenastringS,youareallowedtoconvertittoapalindromebyaddingcharactersinfrontofit.Findandreturntheshortestpalindromeyoucanfindbyperformingthistransformation.Forexample:Given "aacecaaa",return "aaacecaa
hcx2013·2015-10-27 22:00

Minimum Depth of Binary Tree [LeetCode]

The minimum depth is the number of nodes along the shortest path from the root node down to the nearest
·2015-10-27 15:41

[LeetCode] Word Ladder

Given two words (start and end), and a dictionary, find the length of shortest transformation
·2015-10-27 15:17

【leetcode】Shortest Palindrome(hard)★

Find and return the shortest palindrome you can find by performing this transformation. For exampl
·2015-10-27 15:15

【leetcode】Minimum Depth of Binary Tree (easy)

The minimum depth is the number of nodes along the shortest path from the root node down to the nearest
·2015-10-27 15:29

[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
·2015-10-27 15:55

HDU-4725 The Shortest Path in Nya Graph 最短路

　　题目链接：http://acm.hdu.edu.cn/showproblem.php?pid=4725 　　如果直接建图复杂度过大，但是考虑到每层之间的有效边很少，只要在每层增加两个虚拟节点n+i和2*n+i。n+i节点向 i 层的所有连边，权值为0。i 层的所有点向2*n+i节点连边，权值为0。然后每层直接建立边就可以了，即2*n+i-1向n+i连边，权值为c，2*n+i向n+i
·2015-10-27 14:32

PHP 串联珠子问题

php 2 #串连珠子问题(类似于关键字搜索) 3 4 function shortest_sub($a, $m) { 5 $color = array
·2015-10-27 14:12

Leetcode: Word Ladder II

Question Given two words (start and end), and a dictionary, find all shortest transformation
·2015-10-27 14:14

HDU 2224 The shortest path

The shortest path Time Limit: 1000ms Memory Limit: 32768KB This problem will be judged on 
·2015-10-27 13:39

leetcode -- Word Ladder

Given two words (start and end), and a dictionary, find the length of shortest transformation
·2015-10-27 12:10

2015 HUAS Summer Training#2~E

of you is doing research on the Traveling Knight Problem (TKP) where you are to find the shortest
·2015-10-27 12:26

Shortest path of the king

    http://acm.hust.edu.cn/vjudge/problem/viewProblem.action?id=19980   Time Limit:1000MS     Memory Limit:65536KB     64bit IO Format
·2015-10-27 12:18

OSPF (Open Shortest Path First)

OSPF (Open Shortest Path First)   Interior Gateway Protocol Exterior Gateway Protocols
·2015-10-27 11:35

HDU 4725 The Shortest Path in Nya Graph

he Shortest Path in Nya Graph Time Limit: 1000ms Memory Limit: 32768KB This problem will be judged
·2015-10-27 11:09

LeetCode:Minimum Depth of Binary Tree,Maximum Depth of Binary Tree

The minimum depth is the number of nodes along the shortest path from the root node down to the nearest
·2015-10-27 11:30

SPFA

算法介绍： 　　SPFA(Shortest Path Faster Algorithm)是Bellman-Ford算法的一种队列实现，减少了不必要的冗余计算。
·2015-10-26 15:44

[HDU 4725]The Shortest Path in Nya Graph[建图]

题目链接：[HDU4725]TheShortestPathinNyaGraph[建图]题意分析：1到n点间，有边通过代价为w。点又在相应的层上，x层上的点可以到达x+1和x-1层上的任意一个点，代价为c。问：点1到点n的最小代价是？无法到达输出『-1』解题思路：这题可以在点和层之间连一条边，这里我们设n+2*x为层入口，n+2*x-1为层出口。这样把层拆开是避免同层上的点之间的距离变为0。个人感受
CatGlory·2015-10-25 02:00

[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
·2015-10-23 08:57
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