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LS6P
最小二乘法(LS)仿真6个参考节点定位一个定位节点,利用RSSI与距离转化的公式求解距离。(Least squares (LS) simulation 6 reference node positioning a positioning node, the use of RSSI and distance into the distance formula to solve.)
- 2011-11-23 10:14:11下载
- 积分:1
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Q_factor_calcualtor
利用Matlab计算quality factor. 输入是谐振波谱的数据,输出为:谐振频率,谐振幅度和quality factor。(Matlab coding. Calculate quality factor of resonator based on transmission spectrum data.)
- 2020-06-29 19:40:02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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yinshigaosi_method
隐式高斯法求解三相不平衡配电网的潮流计算,很实用,欢迎下载。(Implicit Gaussian method for solving three-phase unbalanced load flow calculation of the distribution network, very practical, welcome to download.)
- 2021-05-07 21:31:35下载
- 积分:1
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static2d
有限元二维静力计算程序,采用四节点线性单元,可以显示变形和应力云图。(Finite element analysis program for 2D problems)
- 2013-05-18 12:20:48下载
- 积分:1
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DFP
DFP法求优化问题的C++源代码,经测试,该程序运行正常,得到了预期的结果。(DFP method for the optimization of C++ source code, tested, the program works correctly to get the desired results.)
- 2011-11-19 14:07:21下载
- 积分:1
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Optimal-solution-back-to-France-0-1
最优解回溯法0-1问题,为了构造最优解,必须在算法中记录与当前最优值相应的当前最优解。(The optimal solution backtracking 0-1 must be recorded in the algorithm, in order to construct the optimal solution, corresponding to the current optimal value, the current optimal solution.)
- 2012-04-11 23:41:56下载
- 积分:1
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mg01
用多重网格方法求解泊松方程,偏微分方程求解(use multigrid method to solve poisson equation, pde solver)
- 2009-11-10 21:45:00下载
- 积分:1
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Scientific-Calculator
用编译的科学计算器,代码详细,清楚。设计简单。(Scientific Calculator with compiled code in detail, clearly.)
- 2013-05-16 15:07:58下载
- 积分:1
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SRCKF
说明: 实现了平方根容积卡尔曼滤波,十分好用,效果很好(This codes ultilize the srckf to filter something)
- 2020-07-31 20:48:37下载
- 积分:1