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Cplex121_Example
说明: matlab调用cplex12.1的例子,这些例子对matlab的cplex接口函数做了非常详细的说明,适用于cplex-matlab的初学者(matlab call cplex12.1 the examples that the cplex interface function of matlab to do a very detailed explanation for beginners cplex-matlab)
- 2020-12-24 10:49:06下载
- 积分:1
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11087 统计逆序对
Description
设a[0…n-1]是一个包含n个数的数组,若在i<j的情况下,有a[i]>a[j],则称(i, j)为a数组的一个逆序对(inversion)。
比如 <2,3,8,6,1> 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, <2,3,8,6,1> 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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wavenumber
Wave numbers of the dispersion wave
- 2018-02-03 21:13:16下载
- 积分:1
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PSO
说明: 基于模拟退火的粒子群算法,模拟退火算法在搜索过程中具有该概率突跳的能力,能够有效地避免搜索过程陷入局部极小解。(Based on simulated annealing particle swarm optimization, simulated annealing algorithm in the search process has a sudden jump in the probability of the capacity, which can effectively avoid the search process into a local minimum solution.)
- 2010-03-17 21:51:53下载
- 积分:1
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runge
说明: 四阶龙哥库塔方法求解一阶微分方程的数值解法,能自定义迭代步数和迭代精度,非常适合于计算方法的初学者。(Long Ge Kuta fourth-order methods for a numerical solution of differential equations can be customized and iterative iterations precision calculation method is suitable for beginners)
- 2010-04-29 12:26:47下载
- 积分:1
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Curve-and-Surface--
详细介绍了移动最小二乘法的原理 应用和特点 并且给最后给出了曲线拟合和空间散
出了使用移动最小二乘法进行曲线曲面拟合的程序设计流程(Moving least squares method described in detail the principles and characteristics of the application and to give the final curve fitting and shed space using moving least squares method curve and surface fitting procedure design process)
- 2020-11-06 08:49:49下载
- 积分:1
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Fluent_tutorial
Fluent 学习文件
全方位的指导手册 (Building geometry
Setting boundary condition types)
- 2014-01-14 10:26:21下载
- 积分:1
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FFTW.tar
世界上开源的速度最快的FFT变换程序FFTW的说明文档,搜集了好久才找到,都是中文的,有助于对FFTW的使用。(Open source in the world s fastest FFTW FFT transform program documentation, gathered for a long time to find, are all in Chinese, help to the use of FFTW.)
- 2015-02-01 11:03:43下载
- 积分:1
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Generator
这些代码可以用于产生一系列随机数,可以根据需要使用。(These codes can be used to generate a series of random numbers may be used as needed.)
- 2013-07-10 14:19:34下载
- 积分:1
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juzhenqiuni
网上看到很多关于矩阵求逆运算的代码,都很杂很乱,我把代码重新真理了一边,可以直接编译运行(See a lot of online matrix inversion code, very complex mess, I put the code back to the side of truth, you can directly compile and run)
- 2010-12-11 16:28:34下载
- 积分:1