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m
题目:有1、2、3、4个数字,能组成多少个互不相同且无重复数字的三位数?都是多少?
1.程序分析:可填在百位、十位、个位的数字都是1、2、3、4。组成所有的排列后再去
掉不满足条件的排列。
(Title: There are numbers 1,2,3,4, how many can be composed of distinct three-digit numbers without repetition? Is how much? 1. Program Analysis: fill in the hundred, ten, a bit of the numbers are 1,2,3,4. Composed of all the permutations and then remove the arrangement does not meet the conditions.)
- 2011-05-23 17:49:15下载
- 积分:1
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thinningPatterns
thin the pattern of a graph, the input is a 01 matrix, very funny
- 2010-06-11 17:13:57下载
- 积分:1
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examples
matlab 与HFSS联合仿真的几个例子。非常好用,,一学就会。(A few of examples of matlab with HFSS simulation. It is very nice, and quick to learn.)
- 2020-11-29 15:49:29下载
- 积分:1
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Matlab-senior-notes(4)
Matlab高级讲义-控制系统的分析方法(Matlab senior notes- control system analysis)
- 2011-12-24 21:13:56下载
- 积分:1
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1xy7z
模块化并联有源电力滤波器Modular Parallel Active Power Filter(Modular Parallel Active Power Filter)
- 2012-04-09 22:31:42下载
- 积分:1
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ThreadPool
一个关于线程池的小demo,windows环境下,可以直接运行。(
A little on the thread pool demo, windows environment, can be directly run.)
- 2014-10-11 11:32:32下载
- 积分:1
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matlab-wavelet
基于小波变换的多尺度图像边缘检测matlab源代码(Based on wavelet transform multi-scale image edge detection matlab source code)
- 2015-04-10 16:38:42下载
- 积分:1
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iso_simplicial
Code that performs cardinality constrained optimization for different filter types
- 2014-09-05 13:23:55下载
- 积分:1
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MINUTERIE
A 16F84A based timer for applications that need a timer.
- 2014-08-20 23:58:17下载
- 积分:1
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4.4
主要用途是对抗多径衰落。由于多径衰落的存在,使得同一个帧由于路径不同,到达用户端的时延有先有后。在相关的频域上的会造成子载波之间的相互干扰,影响 性能。另外,由于有了循环前缀,使得IFFT FFT操作把原来的线性卷积变成循环卷积,大大简化了相应的信号处理复杂度(The main purpose is to fight against multipath fading. Due to the presence of multipath fading, the first after they have the same frame different paths to reach the client delay. Would cause mutual interference between sub-carriers in the frequency domain, affecting performance. In addition, thanks to the cyclic prefix, so IFFT FFT operation to the linear convolution of the original into a circular convolution, greatly simplifying the corresponding signal processing complexity)
- 2012-08-24 15:17:07下载
- 积分:1