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说明: 奇怪的分式
上小学的时候,小明经常自己发明新算法。一次,老师出的题目是:
1/4 乘以 8/5
小明居然把分子拼接在一起,分母拼接在一起,答案是:18/45 (参见图1.png)
老师刚想批评他,转念一想,这个答案凑巧也对啊,真是见鬼!
对于分子、分母都是 1~9 中的一位数的情况,还有哪些算式可以这样计算呢?
显然,交换分子分母后,例如:4/1 乘以 5/8 是满足要求的,这算做不同的算式。
但对于分子分母相同的情况,2/2 乘以 3/3 这样的类型太多了,不在计数之列!,四个四个数不同
请写出所有不同算式的个数(包括题中举例的)。
思路:循环遍历。
dfs c++(dfs c++)
- 2016-03-21 22:17:14下载
- 积分:1
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voronoi
能够得到二维、三维voronoi图,修改后可以获得任意数量的voronoi图。(The two or thress-dimensional Voronoi diagram can be obtained, and any number of Voronoi diagrams can be obtained after modification.)
- 2020-12-21 08:59:08下载
- 积分:1
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S-UNIWARD_matlab
对图像的隐写术,进行信息隐藏,版权保护。(Steganography is used to hide information and copyright protection.)
- 2021-03-21 15:09:17下载
- 积分:1
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Fu-Liye-digital-image-transformation
(1)熟悉并掌握傅立叶变换
(2)了解傅立叶变换在图像处理中的应用
(3)通过实验了解二维频谱的分布特点
(4)用MATLAB实现傅立叶变换仿真
((1) be familiar with and master the Fourier transform (2) understand the Fourier transform in image processing applications (3) experiments to understand the characteristics of the two-dimensional distribution of the spectrum (4) simulation using MATLAB Fourier transform)
- 2013-11-25 20:46:37下载
- 积分:1
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meanshiftprogram
均值偏移算法,在图象的平滑和分割方面是一种很有用的处理方法(mean deviation algorithm, the image smoothing and segmentation is a very useful approach)
- 2007-04-27 17:52:38下载
- 积分:1
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high-precision-laser-ranging-method
测距应用广泛,普通标尺测距很难达到精微测距的要求,激光在这方面有着明显的优势,本文更是运用相位来进一步提高检测的精度!(Ranging widely, ranging ordinary scale ranging requirements difficult to achieve subtle, laser has a distinct advantage in this regard, this paper is the use of phase to further improve the detection accuracy!)
- 2013-11-02 17:15:23下载
- 积分:1
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zuijiayuzhi
找出图象的最佳阈值,并显示它的二值图.(find the best image threshold, and it shows the value of Figure 2.)
- 2006-06-26 01:24:34下载
- 积分:1
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3DBP
机载线阵SAR三维成像,采用后向投影(BP)算法,成像效果比较理想。程序中有各切面的结果图,便于分析成像分辨率。(The airborne SAR three-dimensional imaging uses the back projection (BP) algorithm, and the imaging effect is satisfactory.)
- 2017-06-10 22:39:38下载
- 积分:1
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barcode
PDF417条码定位与检测,视频课程作业,很好的定位了条码而且将其旋转到正方向(PDF417 bar code location and detection, video course work, a good positioning of the bar code and will rotate to the positive direction of its)
- 2010-03-12 13:37:05下载
- 积分:1
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visiblemark1
空域可视水印算法(matlab实现), 考虑了HVS特性,可见水印嵌入同时考虑了原图像和水印图像视觉特性。(airspace visual watermarking algorithm (Matlab achieved), in consideration of HVS features embedded watermark can be seen taking into account the original image and a watermark image visual characteristics.)
- 2005-06-23 18:11:39下载
- 积分:1