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2D-TM
fdtd arithmetic 计算二维tm波(fdtd arithmetic calculation of two-dimensional wave tm)
- 2007-04-25 11:40:26下载
- 积分:1
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AE
说明: arcgis engine开发入门的小程序,用来加载地图文件(mxd,shp,lrc),基于.net平台,需要搭载engine环境。(Arcgis engine introduction to development of small procedures, used to load the map file (MXD, SHP, LRC England), based on. Net platform, need to pick up engine platform)
- 2015-01-20 11:30:55下载
- 积分:1
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DES计算工具及源码
简单的des计算工具,附源码,供大家学习
- 2022-02-28 16:29:26下载
- 积分:1
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ARX示例代码
ARX的参考代码,内含多个实例,含有工程和文件,直接上手就可以调试,简单好用。方便学习参考。给工程开发提供便利。
- 2022-02-21 06:18:58下载
- 积分:1
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1
用正确的形式输入两个多项式,进行两个多项式的四则运算,用可读的形式输出结果多项式(Input two polynomials in correct form, perform four operations of two polynomials, and output result polynomials in readable form.)
- 2020-06-21 22:20:02下载
- 积分:1
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FaceDemo
海康威视人脸检测系统!需要海康威视的硬件支持!其中底层用到海康的sdk(Hikvision Face Detection System! Need hikvision hardware support! Which used the bottom of the sdk Haikang)
- 2008-04-15 09:58:32下载
- 积分:1
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avitools
说明: 一个AVI文件操作的工具软件,包含源代码。可以读、写AVI文件。(an AVI file manipulation tools, including source code. Can read, write AVI file.)
- 2006-03-23 13:51:46下载
- 积分:1
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BigNumber
大数类,重载了各类操作符,可以直接使用(fate categories, a variety of heavy-duty operator can be used directly)
- 2005-02-27 10:55:05下载
- 积分:1
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11087 统计逆序对
说明: Description
设a[0…n-1]是一个包含n个数的数组,若在ia[j],则称(i, j)为a数组的一个逆序对(inversion)。
比如 有5个逆序对。请采用类似“合并排序算法”的分治思路以O(nlogn)的效率来实现逆序对的统计。
一个n个元素序列的逆序对个数由三部分构成:
(1)它的左半部分逆序对的个数,(2)加上右半部分逆序对的个数,(3)再加上左半部分元素大于右半部分元素的数量。
其中前两部分(1)和(2)由递归来实现。要保证算法最后效率O(nlogn),第三部分(3)应该如何实现?
此题请勿采用O(n^2)的简单枚举算法来实现。
并思考如下问题:
(1)怎样的数组含有最多的逆序对?最多的又是多少个呢?
(2)插入排序的运行时间和数组中逆序对的个数有关系吗?什么关系?
输入格式
第一行:n,表示接下来要输入n个元素,n不超过10000。
第二行:n个元素序列。
输出格式
逆序对的个数。
输入样例
5
2 3 8 6 1
输出样例
5(Set a[0... N-1] is a n array containing n numbers. If there is a [i] > a [j] i n the case of I < j, then (i, j) is a n inversion pair of a array.
For example, has five reverse pairs. Please use the idea of "merge sorting algorithm" to achieve the statistics of inverse pairs with O (nlogn) efficiency.
The number of inverse pairs of a sequence of n elements consists of three parts:
(1) The number of reverse pairs in the left half, (2) the number of reverse pairs in the right half, (3) the number of elements in the left half is greater than that in the right half.
The first two parts (1) and (2) are implemented by recursion. To ensure the final efficiency of the algorithm O (nlogn), how should the third part (3) be implemented?
Do not use O (n ^ 2) simple enumeration algorithm to solve this problem.)
- 2019-01-07 23:52:06下载
- 积分:1
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open-cam
基于opencv的use摄像头视频采集程序,轻松打开摄像头(Based on the use opencv webcam video capture program, easy to open the camera)
- 2011-10-05 23:58:23下载
- 积分:1