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poj 1007 DNA Sorting
错误#include#include#includeusing namespace std;struct node { int a; char s[1000]; }p[1000];int cmp(node c,node b){ return c.ap[k].s[j]) p[k].a++; ...
分类:其他好文   时间:2014-08-02 01:37:12    阅读次数:212
Ultra-QuickSort(树状数组 + 离散化)
Description In this problem, you have to analyze a particular sorting algorithm. The algorithm processes a sequence of n distinct integers by swapping two adjacent sequence elements until the seq...
分类:其他好文   时间:2014-07-30 12:22:33    阅读次数:290
uva331 - Mapping the Swaps
Mapping the Swaps Sorting an array can be done by swapping certain pairs of adjacent entries in the array. This is the fundamental technique used in t...
分类:移动开发   时间:2014-07-29 12:38:06    阅读次数:212
uva10327 - Flip Sort
Flip Sort Sorting in computer science is an important part. Almost every problem can be solved effeciently if sorted data are found. There are some ex...
分类:其他好文   时间:2014-07-28 23:53:34    阅读次数:260
C++ Merge sort(归并排序)
归并排序(merge sort)是一个时间复杂度为O(nlogn)的基于比较的排序算法(comparison based sorting algorithm)。 归并排序大多数实现(implementation)都将其实现成了一个stable sort, 所谓的stable sort的意思就是the implementation preserves the input order of equal...
分类:编程语言   时间:2014-07-28 15:55:43    阅读次数:392
Rank Hotness With Newton's Law of Cooling
Greg A. writes,I enjoyed your post on how to not sort by average rating. I was wondering if you have any experience with sorting based on average vote...
分类:其他好文   时间:2014-07-28 15:13:13    阅读次数:261
poj 2299
Ultra-QuickSort Time Limit: 7000MS   Memory Limit: 65536K Total Submissions: 40427   Accepted: 14559 Description In this problem, you have to analyze a particular sorting...
分类:其他好文   时间:2014-07-27 11:44:44    阅读次数:251
[ACM] POJ 3270 Cow Sorting (置换,贪心)
Cow Sorting Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 5946   Accepted: 2263 Description Farmer John's N (1 ≤ N ≤ 10,000) cows are lined up to be milk...
分类:其他好文   时间:2014-07-27 11:19:42    阅读次数:354
POJ 3270 Cow Sorting
这道题运用了置换的知识。 题目大意: 用两两交换的方式给一个数列排序,每交换一次的代价是这两个数之和求最小代价。 解题思路: 对于这种情况,我们在数列中找置换环。每个置换环内的数都是可以回归到它应有的位置上并且不影响其他的置换环。 置换环归位的代价有两种,第一种是用环内最小的数与其他数交换,另一种是用整个数列中最小的数与环内最小的数交换,完成环内所有数的归位后在换...
分类:其他好文   时间:2014-07-26 15:18:00    阅读次数:186
php 自定义类 Clscandir
class Clscandir{ public $path; public $sorting_order; public $completeFiles ; public $completeDirs ; public $files; public $dirs ; public $filesDir...
分类:Web程序   时间:2014-07-26 13:52:05    阅读次数:183
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