-
kelinsi
MAYLAB语言编写柯林斯公式的S-FFT及D-FFT计算程序,请读者自行根据需要修改(MAYLAB language Collins formula S-FFT and D-FFT calculation program, the reader according to their needs modification)
- 2021-04-22 21:48:48下载
- 积分:1
-
FFTyunyong
FFT,快速傅立叶变换,求一个信号的幅值和相角,频谱特性(FFT, fast Fourier transform, seeking a signal amplitude and phase angle, spectral characteristics)
- 2015-03-23 21:28:54下载
- 积分:1
-
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
-
SDEshuzhiqiujie
随机微分方程求解的一个很好的参考资料,算是比较基础的,深入浅出(Stochastic differential equations of a good reference, as a relatively basic, easy to understand)
- 2014-05-28 22:37:50下载
- 积分:1
-
17第十七章 马氏链模型
说明: 数学建模 马尔科夫链的详细讲解 马尔科夫链的详细讲解 数学建模(A detailed explanation of markov chains for mathematical modeling)
- 2019-11-30 13:19:04下载
- 积分:1
-
u_duanlu
本程序用于电力系统不对称故障计算,matlab实现,希望有所帮助(This procedure for the asymmetry of power system fault calculation, matlab realize the hope that help)
- 2008-05-03 15:06:04下载
- 积分:1
-
niugun
正确率可以达到98%,抑制载波型差分相位调制,数据包传送源码程序。( Accuracy can reach 98 , Suppressed carrier type differential phase modulation, Data packet transfer source program.)
- 2020-06-29 10:40:02下载
- 积分:1
-
Newmark
matlab Newmark法 用于求解二阶常系数微分方程组(matlab Newmark method for solving second-order differential equations with constant coefficients)
- 2013-05-23 10:42:33下载
- 积分:1
-
FFT
对信号的FFT(快速傅里叶变换)变换,针对LabView内部信号。(The signal FFT (Fast Fourier Transform) transformation, the internal signal for LabView.)
- 2020-12-04 00:59:24下载
- 积分:1
-
User-subroutine-VDLOAD
ABAQUS的二次开发,非常适合学习VDLOAD的同志们学习,来自廖公云老师的《ABAQUS有限元软件在道路工程中的应用》(Learning from Liao Gongyun teacher "ABAQUS finite element software ABAQUS secondary development, very for learning VDLOAD, comrades in road works")
- 2020-11-29 00:39:30下载
- 积分:1