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A-solver-for-1-D-RIEMANN-problem
分别采用Roe格式和AUSM格式求解一维黎曼问题,并将计算结果与解析解进行比较,发现这两种计算格式都能获得高的计算精度。(Roe scheme were used in this procedure and AUSM format to solve a 1-D RIEMANN problem, and numerical results were compared with the analytical solution, the results can be seen from these two formats have a solution with high accuracy.)
- 2011-11-09 21:44:39下载
- 积分:1
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CMA-Evolutionary--Strategies
Covariance Matrix adaptation ES for optimizing
- 2020-12-14 22:39:14下载
- 积分:1
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RevisedSimplex
这是求解线性规划问题的revised simplex method的算法,需要得知原始的基和基本解(This is the revised simplex method for linear programming problem. It needs the initial basis and basic solution for input.)
- 2020-10-25 11:10:00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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matlab实现捷联惯性导航解算 strapdown
matlab实现捷联惯性导航解算,四元数更新姿态矩阵。(SINS solver matlab)
- 2013-05-03 16:38:47下载
- 积分:1
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Quarter
四分之一圆柱贴体网格的生成,可以调节大小(Fourth cylindrical body-fitted grid generation, you can adjust the size of the)
- 2021-04-03 11:49:05下载
- 积分:1
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Euler equation
说明: 采用Lax-Friedrichs通量分裂,使用C++编写程序,有限差分法(Lax-Friedrichs flux splitting, C ++ programming, finite difference method)
- 2020-04-14 11:47:02下载
- 积分:1
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wavePsvm
小波分解与最小二乘支持向量机,用于天线故障诊断。(Wavelet decomposition and least squares support vector machine for antenna diagnostics.)
- 2013-08-25 15:37:45下载
- 积分:1
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ADAM
ADAM (Adaptive Moment Estimation)是另外一种自适应学习率算法,它结合动量梯度
下降法,在不同参数方向上采用不同学习率,保留前几次迭代的梯度,能够很好
的适应于稀疏数据。(ADAM (Adaptive Moment Estimation) is another adaptive learning rate algorithm, which combines momentum gradient.
The descent method, which uses different learning rates in different parameter directions and retains the gradients of previous iterations, is very good.
It is suitable for sparse data.)
- 2019-04-09 19:59:50下载
- 积分:1
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uniFiber
说明: Abaqus复合材料Hashin失效子程序(Failure subroutine of Hashin for ABAQUS composite)
- 2020-02-22 15:29:35下载
- 积分:1