Tutorial by Examples: ci

The partition of an integer is a way of writing it as a sum of positive integers. For example, the partitions of the number 5 are: 5 4 + 1 3 + 2 2 + 2 + 1 2 + 1 + 1 + 1 1 + 1 + 1 + 1 + 1 Notice that changing the order of the summands will not create a different partition. The partition f...

Shell sort, also known as the diminishing increment sort, is one of the oldest sorting algorithms, named after its inventor Donald. L. Shell (1959). It is fast, easy to understand and easy to implement. However, its complexity analysis is a little more sophisticated. The idea of Shell sort is the f...

When used in an expression out << setprecision(n) or in >> setprecision(n), sets the precision parameter of the stream out or in to exactly n. Parameter of this function is integer, which is new value for precision. Example: #include <iostream> #include <iomanip> #include...

Selection sort is a sorting algorithm, specifically an in-place comparison sort. It has O(n2) time complexity, making it inefficient on large lists, and generally performs worse than the similar insertion sort. Selection sort is noted for its simplicity, and it has performance advantages over more c...

# install react and react-dom $ npm i react react-dom --save # install webpack for bundling $ npm i webpack -g # install babel for module loading, bundling and transpiling $ npm i babel-core babel-loader --save # install babel presets for react and es6 $ npm i babel-preset-react babel-p...

It is common practice to create groups of items by creating simple value nodes with item ID as key. For example, we can add a user to the group "administrators" by creating a node at /administrators/$user_id with a value true. We don't want anyone to know who administrators are, for securi...

Let say you want to create css/js file specific to a platform. For that you have to create a merges folder in root folder of you cordova porject. In merges folder create directory for each platform (android/ios..). then in specific platform folder create a css/js folder and put your css/js file spec...

Pancake Sort is a the colloquial term for the mathematical problem of sorting a disordered stack of pancakes in order of size when a spatula can be inserted at any point in the stack and used to flip all pancakes above it. A pancake number is the minimum number of flips required for a given number o...

systemd provides a modern implementation of cron. To execute a script periodical a service and a timer file ist needed. The service and timer files should be placed in /etc/systemd/{system,user}. The service file: [Unit] Description=my script or programm does the very best and this is the descri...

The Longest Increasing Subsequence problem is to find subsequence from the give input sequence in which subsequence's elements are sorted in lowest to highest order. All subsequence are not contiguous or unique. Application of Longest Increasing Subsequence: Algorithms like Longest Increasing Subs...

'Note: I use this method to extract non-html data in extracted GET telnet results 'This example effectively grabs every other vehicle that have start and finish 'characters, which in this case is "/". 'Resulting in an array like this: 'extractedData(0) = "/Jeep" 'extractedD...

Using async initialization is a recommended way for application development. It uses the OpenCV Manager to access OpenCV libraries externally installed in the target system. Code snippet implementing the async initialization: public class MainActivity extends Activity implements CvCameraViewListen...

According to this approach all OpenCV binaries are included into your application package. It is designed mostly for development and debugging purposes. This approach is deprecated for the production code, async initialization is recommended. If your application project doesn’t have a JNI part, jus...

Due to way that the float type is represented in computer memory, results of operations using this type can be inaccurate - some values are stored as approximations. Good examples of this are monetary calculations. If high precision is necessary, other types should be used. e.g. Java 7 provides Big...

By default all enum values are resolved to numbers. Let's say if you have something like enum MimeType { JPEG, PNG, PDF } the real value behind e.g. MimeType.PDF will be 2. But some of the time it is important to have the enum resolve to a different type. E.g. you receive the value fr...

To add the BottomNavigationView follow these steps: Add in your build.gradle the dependency: compile 'com.android.support:design:25.1.0' Add the BottomNavigationView in your layout: <android.support.design.widget.BottomNavigationView xmlns:android="http://schemas.andro...

Maximum Path Sum is an algorithm to find out a path such that sum of element(node) of that path is greater than any other path. For example, let's we have a we a triangle as shown below. 3 7 4 2 4 6 8 5 9 3 In above triangle, find the maximum path which has ma...

Maximum subarray problem is the method to find the contiguous subarray within a one-dimensional array of numbers which has the largest sum. The problem was originally proposed by Ulf Grenander of Brown University in 1977, as a simplified model for maximum likelihood estimation of patterns in digiti...

One of the most interesting Number Patterns is Pascal's Triangle. The Name "Pascal's Triangle" named after Blaise Pascal, a famous French Mathematician and Philosopher. In Mathematics, Pascal's Triangle is a triangular array of binomial coefficients.The rows of Pascal's triangle are conve...

The Shortest Common Super Sequence is a problem closely related to the longest common subsequence, which you can use as an external function for this task. The shortest common super sequence problem is a problem closely related to the longest common subsequence problem. A shortest common superseque...