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Backtracking
G面经prepare: BuyGoods
举例:口袋里的钱数:10;K=2产品价格:[3,6,8,7,9]输出3,7
Backtracking
:1packageBuyGoods; 2importjava.util.*; 3 4publicclassSolution
neverlandly
·
2016-01-17 06:00
LeetCode-算法总结
LinkedList:链表;Math:数学;TwoPointers:双指针;Sting:字符串;DivideandConquer:分治;BinarySearch:二分;DynamicProgramming:动态规划;
Backtracking
EddyLiu-csdn
·
2016-01-16 22:11
LeetCode
G面经prepare: X-Straight
Example:1,2,3,4,4,5,6->True
Backtracking
:1packageStraight; 2importjava.util.*; 3 4p
neverlandly
·
2016-01-16 04:00
Sudoku Solver
Backtracking
该博客好好分析 WriteaprogramtosolveaSudokupuzzlebyfillingtheemptycells.Emptycellsareindicatedbythecharacter '.'.Youmayassumethattherewillbeonlyoneuniquesolution.回溯法的思想!!(剪枝+回溯+递归运用)分析:首先遍历整个九宫格,并进行标记!rowVali
鼬与轮回
·
2015-12-27 23:00
leetcode -- Add and Search Word - Data structure design -- 重点
https://leetcode.com/problems/add-and-search-word-data-structure-design/同样是关于trie.只是在search的时候要dfs
backtracking
xyqzki
·
2015-12-24 17:00
LeetCode
leetcode -- 解题总结--DP与DFS, 递归
如果是求什么最小值或者判断是否存在,等求数字的题目,用dp如果是求所有possiblesolutions,用DFS
backtracking
看到树首先想到要用递归来解题
xyqzki
·
2015-12-16 22:00
LeetCode
leetcode -- Restore IP Addresses -- 重点,dfs
https://leetcode.com/problems/restore-ip-addresses/求allpossiblesolutions肯定是dfs
backtracking
参考http://www.cnblogs.com
xyqzki
·
2015-12-16 21:00
LeetCode
leetcode -- Gray Code -- 数学题
异或就是本身classSolution: #@returnalistofintegers defgrayCode(self,n): res=[] size=1>1)^i) returnres思路2我想的是
backtracking
xyqzki
·
2015-12-15 20:00
LeetCode
leetcode -- Combination -- 重点,求可能的0,1全排列
这里的dfstree:见自己总结的notes这题是经典的
backtracking
的题目。只要求出0,1全排列就行。
xyqzki
·
2015-12-13 21:00
LeetCode
回溯算法---重点
backtracking
实际上就是通过DFS策略实现的。
xyqzki
·
2015-12-13 20:00
【leetcode】【46】Permutations
1,2,3] havethefollowingpermutations:[1,2,3], [1,3,2], [2,1,3], [2,3,1], [3,1,2],and [3,2,1].二、问题分析同样是
backtracking
xiaoliucool1314
·
2015-11-26 14:00
java
LeetCode
backtracking
【leetcode】【77】Combinations
n.Forexample,If n =4and k =2,asolutionis:[ [2,4], [3,4], [2,3], [1,2], [1,3], [1,4], ]二、问题分析这道题是典型的
backtracking
xiaoliucool1314
·
2015-11-26 14:00
java
LeetCode
backtracking
Handbook of Constraints Programming——Chapter4
Backtracking
Search Algorithms-Branching Strategies
4.2 Branching Strategies In the naive
backtracking
algorithm (BT), a node p = {x1 = a1, .
·
2015-11-13 07:08
programming
Handbook of Constraints Programming——Chapter4
Backtracking
Search Algorithms-Preliminaries
There are three main algorithmic techniques for solving constraint satisfaction problems:
backtracking
·
2015-11-13 07:06
programming
两种迷宫生成算法
这里我要介绍两种迷宫生成的算法,Recursive
Backtracking
和Eller’s Algorithm。它们都生成的是Perfect maze,也就是说每个区域都连通,并且没有环的迷宫。
·
2015-11-12 11:06
算法
[leetcode]算法题目 - Sudoku Solver
回溯法的代码一般都是长成下面这样子: void
backtracking
(int[] arr, int boundary, int current, int[] result)
·
2015-11-11 00:07
LeetCode
线搜索line-search和强Wolfe条件
http://en.wikipedia.org/wiki/Line_search http://en.wikipedia.org/wiki/
Backtracking
_line_search 看来还是要搜中文了
·
2015-11-07 13:56
search
回溯法(
Backtracking
Algorithms ) :C语言Maze迷宫问题(自己实现)
http://www.cs.rpi.edu/~hollingd/psics/notes/
backtracking
.pdf Two situations: – Finding a solution
·
2015-11-02 14:58
algorithms
[Project Euler]加入欧拉 Problem 15
Starting in the top left corner of a 22 grid, there are 6 routes (without
backtracking
) to the bottom
·
2015-11-02 09:44
project
NO 15 [C#] 峰回路转的格子
原题: Starting in the top left corner of a 22 grid, there are 6 routes (without
backtracking
)
·
2015-11-02 09:43
C#
迷宫生成算法
我们现在说Recursive
backtracking
: 迷宫的初始状态是墙壁都存在。选择一个开始区域。 随机得选择一个没有访问过的邻接区域,并打通与它之间的墙壁。
·
2015-11-01 14:48
算法
[Project Euler] Problem 15
Starting in the top left corner of a 22 grid, there are 6 routes (without
backtracking
) to the bottom
·
2015-11-01 13:32
project
List All Of The Subsets
My idea: one thinking of the algorithm
backtracking
is to generate a tree of subset and the condition
·
2015-10-31 15:24
list
回溯算法——解决n皇后问题
所谓回溯(
backtracking
)是通过系统地搜索求解问题的方法。这种方法适用于类似于八皇后这样的问题:求得问题的一个解比较困难,但是检查一个棋局是否构成解很容易。
·
2015-10-30 13:53
算法
8.4 Power Set
Simple
backtracking
question.voidgetSubsets(vector>&result,vector&nums,vector&sub,intpos){ result.push_back
u012175043
·
2015-10-30 08:00
Backtrack
Cheatsheet: 2010 08.01 ~ 08.18
Distributed File Management Optimizing Regular Expression Performance, Part II: Taking Charge of
Backtracking
·
2015-10-27 15:19
sh
[LeetCode] Palindrome Partitioning
The problem has a nice structure that
backtracking
naturally fits in.
·
2015-10-21 12:05
partition
[LeetCode] Subsets
Recursive (
Backtracking
) This is a typical problem that can be tackled by
backtracking
.
·
2015-10-21 12:02
LeetCode
*LeetCode-Flip Game II
backtracking
每次翻两个然后向下递归但是注意要取下次递归的返回值因为假如对手一定输了那么自己才一定赢了publicclassSolution{ publicbooleancanWin(Strings
bsbcarter
·
2015-10-18 07:00
*LeetCode-Path Sum II
和以前做的
backtracking
很像但是注意要删除这次add的node!!
bsbcarter
·
2015-10-06 03:00
LeetCode 39 [Combination Sum I]
解题思路
backtracking
在代码的实现上可以在使用加
Jason_Yuan
·
2015-09-26 11:57
*LeetCode-Palindrome Partitioning
和以前的
backtracking
一样只是需要多了一个check是否是palindrome的函数不要被吓倒 publicclassSolution{ publicList>partition(Strings
bsbcarter
·
2015-09-25 23:00
LeetCode -- Permutations
思路:本题主要是
Backtracking
的一个基本应
csharp25
·
2015-09-25 11:00
*LeetCode-Gray Code
其实不是什么
backtracking
每次increment一个1这个1的位置每层循环左移一位内部循环记得要倒序publicclassSolution{ publicListgrayCode(intn){
bsbcarter
·
2015-09-25 09:00
*LeetCode-Perfect Squares
本来以为可以像combinationsum一样用
backtracking
,结果超时了用dp要想清楚每个位置的数字是如何得来的这个位置时min(dp[i+j*j],dp[i]+1)第一个代表就是原来的值,
bsbcarter
·
2015-09-22 01:00
回溯算法(
Backtracking
)说明与实例
定义回溯算法(
Backtracking
)在很多场景中会使用,如N皇后,数迷,集合等,其是暴力求解的一种优化。
leoleocs
·
2015-08-06 13:49
算法
[LeetCode] Path Sum II
Well, a typical
backtracking
problem. The code is as follows.
·
2015-07-11 23:00
LeetCode
[LeetCode] N-Queens
The idea is to use
backtracking
.
·
2015-07-01 21:00
LeetCode
LeetCode77:Combinations
returnallpossiblecombinationsofknumbersoutof1…n.Forexample,Ifn=4andk=2,asolutionis:[[2,4],[3,4],[2,3],[1,2],[1,3],[1,4],]HideTags
Backtracking
u012501459
·
2015-06-23 21:00
[LeetCode] Combinations
A typical
backtracking
problem.
·
2015-06-22 16:00
LeetCode
[LeetCode] Combination Sum
Well, a typical
backtracking
problem.
·
2015-06-18 00:00
LeetCode
[LeetCode] Letter Combinations of a Phone Number
Well, a typical
backtracking
problem.
·
2015-06-16 23:00
LeetCode
递归下降总结
,感觉还是没有
backtracking
的递归下降和SLL(1)最实用。这里大概总结一下递归下降
doyoubi
·
2015-06-15 14:36
递归下降总结
,感觉还是没有
backtracking
的递归下降和SLL(1)最实用。这里大概总结一下递归下降
doyoubi
·
2015-06-15 14:36
#面试准备#算法笔记
Indexof/teaching/algorithms/notesParentDirectory0-cover.pdf00-intro.pdf01-recursion.pdf02-fft.pdf03-
backtracking
.pdf04
ChiBaoNeLiuLiuNi
·
2015-06-05 01:00
Algorithm
算法
面试
46. Permutations
returnallpossiblepermutations.Forexample,[1,2,3]havethefollowingpermutations:[1,2,3],[1,3,2],[2,1,3],[2,3,1],[3,1,2],and[3,2,1].HideTags
Backtracking
weixin_33896069
·
2015-04-17 23:00
java
数据结构与算法
LeetCode39/40/22/77/17/78/51/46/47/79 10道
Backtracking
**
这里将6道
backtracking
的题目放在这里,
backtracking
是有一定技巧的,后面会总结分别是:一:LeetCode39 CombinationSum 二:LeetCode40 CombinationSumII
Lu597203933
·
2015-04-12 12:00
array
回溯
backtracking
leetcode || 77、Combinations
... n.Forexample,If n =4and k =2,asolutionis:[ [2,4], [3,4], [2,3], [1,2], [1,3], [1,4], ] HideTags
Backtracking
hustyangju
·
2015-04-10 09:00
LeetCode
算法
DFS
回溯法
排列组合
leetcode || 47、 Permutations II
returnallpossibleuniquepermutations.Forexample,[1,1,2] havethefollowinguniquepermutations:[1,1,2], [1,2,1],and [2,1,1].HideTags
Backtracking
hustyangju
·
2015-03-30 16:00
LeetCode
算法
搜索
回溯
leetcode || 46、Permutations
1,2,3] havethefollowingpermutations:[1,2,3], [1,3,2], [2,1,3], [2,3,1], [3,1,2],and [3,2,1].HideTags
Backtracking
hustyangju
·
2015-03-30 15:00
LeetCode
DFS
回溯
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