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//// main.cpp// 3-13递归Fibonacci级数//// Created by T.P on 2018/3/21.// Copyright ? 2018年 T.P. All rights reserved.////课本习题3-13.用递归的方法编写函数求Fibonacci级数，//公式为：Fn=Fn-1 + Fn-2 （n>2),F1=F2=1#include //// main.cpp// 3-14递归n阶勒让德多项式//// Created by T.P on 2018/3/21.// Copyright

site unless the text is a large font and the foreground and background are clearly contrasted. Unfortunately, many sites assume that users have superhuman vision. An example with this problem can be in h t T P://w W. Web d e S i g N r E F. C o m/c h a P t e r 3/v i s i o n i s u e s. H T M find. To avoid annoying color combinations, designers should understand how the human eye accepts color. The three factors that affect the color are: Tone. T

Scenario: Resolve a lookup in a large amount of data on the hard disk. Because a large amount of data is stored in the hard disk, can not be loaded into memory all at once, and each time a data read the hard disk, reading speed is too slow, it is necessary to use a part of a data structure read in, this is the role of multi-path search tree. 2-3 Trees 2 nodes: Each of the points contains one element and two children (or no children). Where the left c

A third-level network is a nightmare for many non-computer students and even computer students. I believe there are many people who participate in various training courses in order to take the test and get the certificates of Level 3 networks. Even after the examination, I got a level 3 certificate, but the rest is almost blank, that is, after passing the examination, there is nothing left in my mind. A few

3. in-depth understanding of LaravelEloquent (3)-Inter-model relationship (association) in-depth understanding of Laravel Eloquent (3)-Inter-model relationship (Association) In this article, I will join you in learning the most complex and difficult part of Eloquent-the relationship between models. The official English document is Relationships. I personally thin

Layer-3 extension layer-7, layer-3 layer-7 In the process of data center cooperation, the idea of three layers (UI--BLL--DAL) is used to expand to seven layers, and SVN is used for cooperative development. During development, data transmission and method calling are all important and frequent. Because of the frequency, chaos is inevitable without planning and management, and it also results in a huge work

CSS 3 animation introduction, CSS 3 Animation Original article: A Beginner's Introduction to CSS Animation A beginner's introduction to CSS Animation Translator: dwqs Nowadays, more and more websites use animations in various formats, such as GIF, SVG, WebGL, and background videos. When the animation is used properly in the web, it can inject vitality and good interaction into the website, and provide use

Cordova 3.x BASICS (3) -- debug the debug tool (1) ripple emulatorIt is a mobile application Simulator Based on Google Chrome and has been donated to ASF. Apache ripple: http://ripple.incubator.apache.org/Chrome WebStore installation address:Https://chrome.google.com/webstore/detail/geelfhphabnejjhdalkjhgipohgpdnocInstall ripple emulator Reference NPM install-G ripple-emulator Create an android test proj

Section 3 analyzes the SWT Design Principles Returned directory In the first chapter, we have introduced that SWT uses the local control library provided by the underlying operating system. It is only a Java interface for the interaction between the program and the underlying system. The lifecycle of a local control is like a mirror of a Java control object: When a Java Control is created, the local control is created at the same time; When a Java Co

Configuration example of cisco router and layer-3 Switch environment, cisco layer-3 SwitchSimple environment configuration instance for cisco router layer-3 Switch I. network topology: Ii. configuration command: 1. vro Configuration: Interface FastEthernet0/0 Ip address 10.66.88.222 255.255.255.0 Ip nat outside Duplex auto Speed auto Interface FastEthernet0/1 I

expressions (two arguments can be followed, only one line)1 Lambda A, b:a + B + 100Four function I return valueIf return does not specify a value, it is none.1 def F1 (): 2 Print (123) 3 return ' 111 ' 4 # in the function, once the return is executed, the function execution process terminates immediately, and the following print will no longer execute 5 Print (456)II parameters1 General parameters (in strict order, the actual paramete

to complete a single step, but to describe the behavior of something in the whole process of solving the problem.For example, the process-oriented design is the first step in the analysis of the problem: 1, start the game, 2, Sunspot first go, 3, draw the screen, 4, Judge Win and lose, 5, turn to white son, 6, draw the screen, 7, Judge Win and lose, 8, return step 2,9, output the final result. The problem is solved by using separate functions for eac

Python Study Notes 3-strings, python Study Notes 3- Format String/compound field name >>> import humansize>>> si_suffixes = humansize.SUFFIXES[1000]>>> si_suffixes['KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB']>>> '1000{0[0]} = 1{0[1]}'.format(si_suffixes)'1000KB = 1MB' >>> import humansize>>> import sys>>> '1MB = 1000{0.modules[humansize].SUFFIXES[1000][0]}'.format(sys)'1MB = 1000KB' Sys. modules is a d

objectWhen initializing a Bitset object with a string object, it is initialized directly to the binary sequence, starting from the right of the string Object!!1 stringSTR1 (" +");2 //the 0-3 bits of the Bit1 object are 0001 and the remaining highs are 03bitset +>bit1 (str1);4 //It must be noted that the conversion of the string object and the Bitset object is reversed! That is, the maximum subscript (right) of the string object begins to

From scratch learn JAVA-3. Store and modify variable information in the program, java-3 variable 1. Create a variable; 2. Use different types of variables; 3. Store values in variables; 4. Use variables in mathematical expressions; 5. Assign the value of a variable to another variable; 6. Increment/decrease the value of the variable. Program Variable: use differe

, that is, foo.In the second example, the grouping operator refers to foo. the parentheses "()") outside the bar have no practical significance. Think about the method mentioned above to get the true value of an object from the reference type, such as GetValue (see 11.1.6 ). Correspondingly, in the return value of the group operation, what we get is still a reference type. This is why the value of this is set as the base object again, that is, foo.In the third example, unlike the grouping operat

Android UI highlights-1. Android Drawable Classification summary (3/3), 1. androiddrawable Android UI collection-1. Android Drawable Classification summary (3/3) ~ For more information, see coder-pig. This section introduces: We have learned about the Drawable of Android 2/3