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comput_v
应用FORTRAN语言编写的通过方向应力张量与应力余弦张量求解主应力矩阵(Application FORTRAN language through direction cosine stress tensor and the stress tensor matrix solving the principal stress)
- 2013-08-13 10:16:21下载
- 积分:1
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lid-driven-flow(SIMPLE)
计算流体力学重要算法 simple算法计算顶盖驱动流动。(An example for using SIMPLE algorithm to computing lid driven flow in CFD)
- 2021-03-31 22:29:08下载
- 积分:1
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appendix3-vumat
说明: VUMAT for Kinematic Hardening Plasticity
- 2020-07-08 19:22:13下载
- 积分:1
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equal
求解四元三次方程组,通过在VC++的编程环境,实现计算的高速运行(Solving four yuan cubic equations by VC++ programming environment, to achieve high-speed operation calculated)
- 2013-06-19 08:24:46下载
- 积分:1
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simulink
求非线性系统的相平面轨迹、平衡点时,编写采用一步仿真计算状态轨线斜率的函数M文件(Phase plane trajectory of nonlinear systems, the equilibrium point, write step simulation state rail line slope function M)
- 2013-03-08 19:51:53下载
- 积分:1
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45095smoothing
这个帖子中我想讨论的是移动窗口多项式最小二乘拟和平滑方法,粗糙惩罚方法,以及kernel平滑方法。(Posts in this discussion I think are moving window least squares polynomial fitting smoothing method, crude methods of punishment, as well as the kernel smoothing method.)
- 2009-03-20 14:20:09下载
- 积分:1
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Gauss
matlab中高斯迭代法使用的m文件,可以用于方程组近似值的求解。(m file matlab Gauss iterative method can be used for approximation of solving equations.)
- 2012-06-04 18:55:14下载
- 积分:1
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3107002005_5th_spline
说明: 曲线的三次样条插值,在非首尾节点处具有三次光滑性质(Curve cubic spline interpolation, in both nodes with non-smooth nature of the three)
- 2008-10-27 11:07:08下载
- 积分:1
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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
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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