Today, there is not much speech, only code, extension methods too much, can not be listed, some books, see more will be used.1 //Enumerable.range Returns the start to end range, which is a enumrable type2 //The range method does not really construct
Write in frontThe code is already hosted on https://git.oschina.net/augustus/TinyWS.gitYou can clone it down with Git. Since I may occasionally make changes, there is no guarantee that the code on the GIT library will be exactly the same as in the
Title:Given binary trees, write a function to check if they is equal or not.The binary trees is considered equal if they is structurally identical and the nodes has the same value.Answer 1:dfs Recursive methodidea: first determine whether the root
The following two C + + classes are available:classBase { Public: Base (intAintb): M_a (a), M_b (b) {}Virtual voidFunc1 (); Virtual intFunc2 ();Private: intm_a, M_b;}classDerived: PublicBase { Public: Derived (intAintBDoubled): Base (A, B), M_d (d)
First look at a program:Operation Result:Just inadvertently found that the first reaction to think there is a problem, n is unsigned, it is impossible to equal 1, so it is impossible to jump out of the loop, but the result is out of the loop, that
Well, the programmer's eternal quest is performance, right?In order to measure performance, timing is naturally required.However, regardless of the C standard library or C + + standard library, the time API accuracy is not high because of
There are Class A, and variables A and B of type A. After initialization of a, assign a to B. The A is then assigned null. B can still be used after that.Thinking error: After thought A=null, B should also be equal to NULL.The actual test results
C # Basic knowledge of the TenWritten by Zhu Zhu, please specify from Zhu Zhu Homeland http://blog.csdn.net/zhgl76881. The data in the XML document contains an XML tree that consists primarily of nested elements, each of which has a name and
Because of the previous use of Java Time Properties, and then to C # seldom use attributes, general use of public fields to replace, today in order to understand these differences deliberately read this knowledge.From the declaration of both, the
//Here's a time to open the form to perform the button on the timer .Private voidForm1_Load (Objectsender, EventArgs e) {System.Timers.Timer Ptimer=NewSystem.Timers.Timer ( the);//executes every 5 seconds, without
C # is a secure, stable, simple, fully object-oriented programming language derived from C and C + +. It inherits the power of C and C + + while removing some of their complex features (for example, no macros and templates, multiple inheritance is
Generally involves the object-oriented C#,java are inevitably involved in classes, C # The suffix name for the class in the. Cs,java is. Java,object-c typically uses two files to describe a class with a suffix of. h as the class's declaration file,
The main function of extern "C" is to call other C code correctly. After extern "C" is added, it indicates that the code of the compiler is compiled in C language instead of C ++. C ++ supports function overloading. Therefore, during function
POJ 2264 Advanced Fruits (longest common subsequence)
This question requires the longest public subsequence and DP, but no, so I went to learn this. After reading it for a while, I finally got a little bit of experience.
The main idea is to first
Codeforces -- Spreadsheets (simulation)
Spreadsheets
Time Limit:10000 MS
Memory Limit:65536KB
64bit IO Format:% I64d & % I64uSubmit StatusAppoint description:
System Crawler)
Description
In the popular spreadsheets systems (for example, in Excel)
[LeetCode] Divide Two Integers
Divide two integers without using multiplication, division and mod operator.
If it is overflow, return MAX_INT.
Time Complexity log (n)
There is a coner case
Dividend =-2147483648
Divisor =-1;
The answer is 214
POJ 2777 Count Color
This question has actually been written before. It should be relatively simple in the line segment tree, but I have been stuck for a long time. It is because of a small error that I cannot find, crying.
When looking for a color
C ++ temporary object note
There are two areas in C ++ that have always been vague. The first is the reference, and the second is the temporary object. This may be related to my lack of systematic knowledge and I haven't read C ++ Primer yet. I
LeetCode-Search a 2D Matrix
Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties:
Integers in each row are sorted from left to right.
The first integer of each row is greater than
C realizes the polymorphism of C ++ .....
There are two C ++ classes:
class Base {public: Base(int a, int b) : m_a(a), m_b(b) {} virtual void Func1(); virtual int Func2();private: int m_a, m_b;}class Derived : public Base {public:
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