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Dijkstra
求数组最长递增子序列算法。输入一个数组,输出其最大递增子序列(Array for the longest increasing subsequence algorithm. An array of input and output its maximum incremental sequence)
- 2007-08-07 16:14:13下载
- 积分:1
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pls_model00
简述算法在实际当中的应用以及算法的改进和延伸(Improvement and extension of applications and algorithms of the outlined algorithm in practice)
- 2012-06-29 09:45:45下载
- 积分:1
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Y2M.m
使用Y矩阵来综合得到耦合矩阵M中各元素的matlab源代码(The Y matrix to obtain an integrated coupling matrix M of each element matlab source code)
- 2013-09-06 15:25:53下载
- 积分:1
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kalmanFilter
卡尔曼滤波程序用于时间序列预测,结构简单程序易懂(kalman filter for prediction)
- 2021-01-21 17:28:48下载
- 积分:1
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HGT
WRF模拟结果气象要素的检验对比,包含均方根误差,偏差和相关系数等(WRF simulation test results comparing meteorological elements, including the root mean square error, deviations and correlation coefficients)
- 2021-03-17 15:29:21下载
- 积分:1
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HFSS-RCS-EXAMPLE
说明: 采用电磁仿真软件HFSS进行雷达散射截面(RCS)计算实例.(Monostatic Radar Cross Section)
- 2011-02-19 18:03:24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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跟踪算法
说明: 卡尔曼滤波在目标跟踪中的应用,文件包含完整的卡尔曼滤波过程以及跟踪误差分析。(Application of Kalman filter in target tracking)
- 2020-02-27 09:02:37下载
- 积分:1
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zheng
正入射的自由曲面透镜设计,计算获得透镜的二维坐标(The free-form surface lens is incident on the design, the two-dimensional coordinates of the lens calculated)
- 2021-04-13 18:58:56下载
- 积分:1
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Explain-of-SAP5
解释有限元程序SAP5的原理,结构,算例的一本书籍(The finite element program SAP5 explain the principles, structure, examples)
- 2017-03-30 19:48:51下载
- 积分:1