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MOM
用矩量法(电场结合磁场积分方程)算金属圆柱散射(Using the method of moments (electric field integral equation combined) considered the scattering of metal cylinder)
- 2021-04-04 20:39:04下载
- 积分:1
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RAS-algorithm
用于解决投入产出问题的RAS算法,已知矩阵的行和和列和,可以求出矩阵的具体值。(For the RAS algorithm to solve the problem of input and output. We know the rows and columns of the matrix,then the specific value of the matrix can be calculated.)
- 2021-03-24 09:59:15下载
- 积分:1
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BandC
潮流计算中的拉丁采样算法的源程序,可运用其进行概率潮流计算(Latin sampling flow calculation algorithm source, may, in its calculation of the probability trend)
- 2013-06-17 15:39:53下载
- 积分:1
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0527
差声波检测混凝土的反演计算,通过超声波对未知损伤损伤程度的混凝土进行检测,检测出其损伤程度(Poor acoustic detection of concrete inversion, the unknown damage by ultrasonic concrete testing the degree of injury, to detect the degree of injury)
- 2020-06-30 19:20:02下载
- 积分:1
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7756
感应双馈发电机系统的仿真,基于分段非线性权重值的Pso算法,计算多重分形非趋势波动分析matlab程序。( Simulation of doubly fed induction generator system, Based on piecewise nonlinear weight value Pso algorithm, Calculation multifractal detrended fluctuation analysis matlab program.)
- 2017-05-12 16:30:34下载
- 积分:1
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2Dforce-based-non-prismatic-element
Mathematica计算基于力平衡变截面梁单元的质量和刚度矩阵(2D force-based finite element mathemaica)
- 2020-11-26 16:09:32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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covar
说明: 使用Eviews编写covar程序,实现covar的计算(Using Eviews to write Covar)
- 2021-04-27 22:58:45下载
- 积分:1
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hmqd
基于db8小波的,平移不变小波变换,层有关硬阈值滤波,(Based on db8 wavelet, translation invariant wavelet transform, layer related hard threshold filtering,)
- 2018-11-14 17:19:54下载
- 积分:1
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Johnson-Cook User subroutine VUMAT
ABAQUS扩展子程序应用,实例学习,仅供参考(ABAQUS extended subroutine application)
- 2020-11-18 16:59:38下载
- 积分:1