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HDOJ 搜索题(总共100题)

2013年11月06日 ⁄ 综合 ⁄ 共 2061字 ⁄ 字号 评论关闭

DFS(Depth First Search )

一般是不用hash的,所以很多时候称之为”暴力”,也就是穷举所有情况,一般看几个我们OJ的dfs的版本的题目就可以模仿着做了,因为牵涉到递归,初学者学的时候最好能举一反三,理解其中真谛.

DFS --- EASY(15)

 Tempter of the Bone

 Safecracker

 Prime Ring Problem

 Robot Motion

 Fire Net

 猜数字

 Oil Deposits

 Sum It Up

 Red and Black

 Shredding Company

 Krypton Factor

 Rank

 How Many EquationsCan You Find

 Accepted Necklace

Lotto

 

一般的DFS有时候可能会加入一些DP的思想,从而就变成了记忆化搜索,原理是将以前算过的状态记录下来,接下来的访问就不用继续递归计算,以后直接用就好了.

DFS + DP --- EASY(7)

 FatMouse and Cheese

 A Walk Through theForest

 Pascal's Travels

 Anniversary party

 Unidirectional TSP

 Numbering Paths

 Dota all stars

 

DFS + DP --- NORMAL(1)

 Islands and Bridges

 

DFS --- NORMAL(16)

 Sticks

 Transportation

 Square

 IncreasingSequences

 Free Candies

 Anagrams by Stack

 Station Balance

 A Puzzling Problem

 Vase collection

 哈密顿绕行世界问题

 NecklaceDecomposition

 Barbara Bennett'sWild Numbers

 Sequence one

 Islands

 Pipes

 No Left Turns

 

BFS(Breadth First Search )

http://cache.baidu.com/c?m=9d78d513d9d431a44f9a95697d12c017134381132ba1d1020ed38439e7732a4b506793ac56520772d0d20d1716db4c48adb0687d6d4566f58cc9fb57c0fed76d388850763041d301418c4dfc975125b671cd05f4ff47baefed61d3e88982810344ca24563bc2e78a2e5b42dd6e86123ae6a49e&p=81759a41dc9601f201be9b7a5c40&user=baidu

 

BFS --- EASY(17)

 Ignatius and thePrincess I

 Nightmare

 诡异的楼梯

 Open the Lock

 超级密码

 Asteroids!

 Rescue

 Hike on a Graph

 胜利大逃亡

 N-Credible Mazes

 Knight Moves

 Basic wall maze

 A strange lift

 A计划

 Game III

 Hiking Trip

 Hamburger Magi

 

BFS --- NORMAL(27)

 Gap

 Remainder

 The Proper Key

 胜利大逃亡(续)

 The Treasure

 Bubble Shooter

 Copying DNA

 Full Tank?

 Cheesy Chess

 Push Box

 Key Task

 Frogger

 Prime Path

 Frogger

 Escape from EnemyTerritory

 Escape

 Bus Pass

 Marbles in ThreeBaskets

 Treasure of theChimp Island

 逃离迷宫

 find the neareststation

 Dogs

 Lode Runner

 Tobo or not Tobo

 Sum of Digits

Escape

 An interesting mobilegame

 

BFS+DFS --- EASY(4)

 Collect More Jewels

 推箱子

 Different Digits

 Kaitou Kid - ThePhantom Thief (2)

 

DoubleDirectionBFS(3)

 Solitaire

 魔板

 Bridged MarbleRings

 

 

BS( Binary Search )(5)

这类题目一般不会单一只有一个算法,一般都是二分+?(最大流,二分匹配,贪心,DP)等等,这里仅列出二分枚举的题目,即二分枚举答案,然后判断可行与否。

 The Balance

 Equations

 Cable master

 Sum Zero

 Pie

 

IDA Star (4)

迭代加深本身不难,但是好的剪枝比较难想

 DNA sequence

 The Rotation Game

 Booksort

 Escape from Tetris

 

看起来像搜索但是搜索会TLE的题一览(1)

 Arbitrage

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