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九度 题目1453:Greedy Tino
题目描述:  Tino wrote a long long story. BUT! in Chinese... So I have to tell you the problem directly and discard his long long story. That is tino want to carry some oranges with "Carrying pole", an...
分类:其他好文   时间:2015-03-02 13:17:45    阅读次数:205
HackerRank - Sherlock and The Beast
Greedy beats DP this time...I tried several DP solutions first, but all failed with RE\TLE. If you 'feel' the problem, Greedy should be working:(A sol...
分类:其他好文   时间:2015-03-02 12:44:57    阅读次数:106
hdu2955---Robberies(概率做01背包)
Problem Description The aspiring Roy the Robber has seen a lot of American movies, and knows that the bad guys usually gets caught in the end, often because they become too greedy. He has decided to w...
分类:其他好文   时间:2015-02-24 15:10:58    阅读次数:196
LeetCode 135. Candy (O(n)时间 O(n)和O(1)空间的两种实现)
贪心算法,从局部最优推广成全局最优。 这里介绍O(n)时间 O(n)和O(1)空间的两种实现方法。...
分类:其他好文   时间:2015-02-17 00:50:26    阅读次数:174
[C++]LeetCode: 131 Trapping Rain Water (双边扫描)
题目: Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it is able to trap after raining. For example,  Given [0,1,0,2,1,0,1,3,2...
分类:移动开发   时间:2015-02-04 13:08:10    阅读次数:256
CodeForce 508C Anya and Ghosts (贪心+模拟)
题目大意:有m个时刻,在第i时刻即wi秒的时候需要保持有r根蜡烛亮着,每根蜡烛维持的时间为t秒,点一根蜡烛需要1秒。 注意:一根蜡烛亮的时间为下一秒开始。并且一开始是可以事先准备蜡烛的。 想法:利用了优先队列,维护r根蜡烛,每次wi秒,它需要开始点蜡烛的最晚时间为wi-t,如果不够这个时间,那么在最晚结束点蜡烛的时间wi-1开始补上。 感谢阿扎夫人提供的思维题。 AC代码: #defin...
分类:其他好文   时间:2015-02-02 12:39:11    阅读次数:169
Prim 最小生成树算法
Prim 算法是一种解决最小生成树问题(Minimum Spanning Tree)的算法。和 Kruskal 算法类似,Prim 算法的设计也是基于贪心算法(Greedy algorithm)。Prim 算法的思想很简单,一棵生成树必须连接所有的顶点,而要保持最小权重则每次选择邻接的边时要选择较小...
分类:编程语言   时间:2015-01-31 10:34:32    阅读次数:299
正则表达式(三)
1.qualifier(限定符) 查看API会发现,在正则表达式构造的最后部分,有一些解释是相同的。那么这三种表达式有什么区别呢? Greedy(贪婪的),Reluctant(勉强的),Possessive(占有,霸道的)。一般我们常见的和使用的是Greedy类型的。下面用例子来说一下三者的区别.....
分类:其他好文   时间:2015-01-30 01:20:02    阅读次数:296
poj1113--Wall(凸包)
Wall Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 30701   Accepted: 10340 Description Once upon a time there was a greedy King who ordered his chief Archite...
分类:其他好文   时间:2015-01-29 09:26:50    阅读次数:112
[leetcode]Text Justification
问题描述; Given an array of words and a length L, format the text such that each line has exactly L characters and is fully (left and right) justified. You should pack your words in a greedy approach...
分类:其他好文   时间:2015-01-26 21:09:38    阅读次数:185
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