C++

[Cpp]1 // The Rapid power of the integer m ^ n % k:Long quickpow (long m, long n, long k ){Long ans = 1;While (n ){If (n & 1) // if n is an odd numberAns = (ans * m) % k;N = n> 1; // bitwise operation "shifted to 1, similar to Division 1"M = (m * m)

If aViewController bViewController is available, how can we determine which ViewController is activated for the current View? The following method can be used for simple implementation.[Cpp]If ([viewController isMemberOfClass: NSClassFromString (@

Problem:Given two strings s1 and s2, it is required to determine whether s2 can be contained by the string obtained by s1's cyclic shift. Solution:When we perform cyclic shift on s1, we retain the previously removed data, and we will find that if we

Given the radius of m circles, we need to find a rectangle so that every ball is tangent to the ground and the minimum length of the matrix must be output. Solution: The smallest circle arrangement problem. For such a graph, I convert it to

1. constructor/default constructor: the question about how to initialize an object is how to fill in the content of a new data type, whether explicit it or implicit is required or not is required. It is generally recommended that explicit it be

This question uses two computational Geometric algorithms. Solve convex hull and simple polygon area. For more information about convex hull algorithms, see Introduction to algorithms. The polygon area is divided into triangles.Shape. It is

This question has plagued me for a long time. The original idea was correct, but I found a reason to deny myself. I believe that the first feeling is good. First find the maximum price mx, and then let the other do 0/1 backpack, let its total

Dynamic Planning and search, wrong once, we know the direction of each move, search to select the maximum value, no need to save the results of another array, add an access array visit, the original access has obtained the maximum value, and the

This question uses several knowledge. One is the formula for finding the polygon area. Then, calculate the number of vertices on the boundary of the polygon based on the vertices on the whole point. The last one is pick.Theorem. Calculate the number

Type: Implicit Graph Search Original question:There are three jugs with a volume of a, B and c liters. (a, B, and c are positive integers not greater than 200 ). the first and the second jug are initially empty, while the thirdIs completely filled

Introduction:In the previous article, we talked about KVC. In this article, we learned KVO. The full name is: Key Value Observing. the literal translation is: Key Value-based observer.So what is its use? KVO is mainly used for view interaction. For

At first glance, we can see that the Euler's function is used. The formal meaning of the Euler's function description. According to the introduction to algorithms, Euler's function can filter prime numbers from 0 to n-1.The formula n contains (1-1/p)

--------------------------------------------------- Description: I haven't understood this question many times. English is not enough. It is required to find the non-conflicting "interesting" subsequence. ---------------------------------------------

Breakpoint adding method: double-click the vertical column on the left of the corresponding code line. Start debugging: click a button similar to a spider. . F6 single-step debugging F5 enter Function F7 jump function F8 continues to the next

// Question: Use two circles to overwrite a polygon and find the center of the two circles (in a certain order) when the maximum area is covered ).// The polygon is pushed inward to calculate the half plane intersection + the farthest point pair.//

This is a problem of discrete logarithm. I used to learn the basis of cryptography before, but I did not expect that acm will have such exercises.The problem is that given the prime number P, the equation a ^ x = B % p is given. Note that the two

This is a number topic that I figured out today. It was quite interesting. yeah came up with it for a moment. However, I had to pay for my carelessness in the tragedy three times, nm data center BlankAll cells are wrong, and I forgot to empty the

Recently, Image Feature Extraction may require HOG features. Therefore, we have studied the HOG descriptor of OpenCV. The HOG Feature Extraction function in OpenCV uses the HOGDescriptor class for encapsulation. There are also ready-made interfaces

Algorithm Design, dynamic planning, matrix, and multiplication //////////////////////////////////////// ////////////////////////// TITLE: matrix concatenation Problem// EDITOR: Xiaoqiao streamline// DADE: 2008.11.16// TOOL: Microsoft Visual Studio 20

1. In c ++, the goal of the class concept is to provide a new type of tool for programmers so that these new types can be used as conveniently as internal types. In addition, the derived classes and templates provide methods to organize related