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1
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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area
说明: 计算凸包面积,点集Q的凸包是指一个最小凸多边形,满足Q中的点或者在多边形边上或者在其内。(Calculate convex hull area。The convex hull of point set Q is a minimum convex polygon, to meet the Q of the point or polygon or in its inside edge)
- 2010-04-11 01:20:14下载
- 积分:1
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LD24_SlimeWorld_ProjectFile
好东西,下下来看就知道了好东西,下下来看就知道了(Good things, under the terms of the next good thing to know, under the circumstances of view to know)
- 2013-11-18 08:52:20下载
- 积分:1
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ex2
用画笔绘制圆角矩形,椭圆,饼形,并用不同颜色画刷进行填充。(Draw a rounded rectangle, ellipse, pie with a brush, and brush with a different color fill.)
- 2013-12-07 23:42:44下载
- 积分:1
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jQueryUploadifyDemo
他很反感;归属地分块地方好法国号法国号韩国胡富国(He was disgusted attribution to block a good place to Hu Fuguo French horn French horn Korea)
- 2013-11-02 11:16:46下载
- 积分:1
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tuxingxue
这是一本关于图形学实验的指导书里面有对图形学的具体讲解(tuxingxue)
- 2009-05-18 00:21:46下载
- 积分:1
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xulietuxiangjianceyuchongjian
针对目前工业制造领域面临的难题,提出利用非量测数字摄像机进行工业钣金件高精度三维重建与视觉检测.采用二维直接线性变换分解摄像机参数初值并结合光束法平差进行高精度标定 利用最小二乘模板匹配提取像面上的点、直线信息并进行混合光束法平差,从而进行钣金件的高精度三维重建及其尺寸制造误差的检测.所开发的视觉检测系统硬件成本低、自动化程度较高,实际数据的多次实验均取得了优于1/8 000的相对精度,说明所论述的方法为工业零件的自动化三维检测提供了一条可行途径.(View of the current challenges facing the field of industrial manufacturing, made use of non-metric digital camera precision sheet metal parts for industrial reconstruction and visual inspection. Using two-dimensional direct linear transformation and the decomposition of initial parameters of the camera bundle adjustment with high accuracy calibration extracted by the least square template matching, like the surface of point, line information and mixed bundle adjustment to the three-dimensional reconstruction of high-precision sheet metal parts and the size of the detection of manufacturing errors. visual inspection system developed by the hardware low cost, high degree of automation, the actual data, many experiments have achieved better than 1/8000 of the relative accuracy, that the methods discussed in the automation of industrial components to provide a feasible three-dimensional detection approach.)
- 2010-12-02 11:56:32下载
- 积分:1
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C++源代码
基本图像处理用C++的实现。包括平移旋转翻转边缘提取canny算子等(The basic image processing with C + +.)
- 2017-12-20 15:51:55下载
- 积分:1
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345Terrain
说明: 再来一个绘图程序,花了我一个上午时间才搞定。(then a drawing program, I spent a morning time to get.)
- 2006-03-14 09:23:21下载
- 积分:1
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HistDemoA
说明: VC做的图像直方图均衡化小程序,有助于学习图像处理基本知识(VC image histogram equalization do applet can help to learn basic knowledge of image processing)
- 2009-08-31 14:36:38下载
- 积分:1