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In this section we will see some common mathematical problems and their possible way solve using different computational algorithms. We will see how to solve differential equations, integrations and some other complex mathematical problems. In this Section We are going to cover − Convert Infix to Postfix Expression Convert Infix to Prefix Expression Evaluate Postfix Expression Secant method to solve non-linear equation Trapezoidal Rule for definite integral Simpson's 1/3 Rule for definite integral Linear Regression Lagrange Interpolation Runge-Kutta 4th order rule for differential equation Lucky Numbers Decimal to Binary conversion Find LCM of two numbers Find ... Read More
Before getting into the Navigation view example, we should know about navigation view. Navigation view is just like a sliding menu in HTML. Navigation view is extended by navigatoin drawer. Most of use cases of Navigation view is used to redirect different activities or show profile information.This example demonstrate about how to integrate NavigationView in ActionBarStep 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step2 − While creating project we should select Navigation drawer activity as shown belowAfter selecting navigation drawer activity click on ... Read More
To compare two Java long arrays in Java, use Arrays.equals() method. Let’s say we have the following long arrays. long[] arr1 = new long[] { 767, 568, 555, 897, 678 }; long[] arr2 = new long[] { 456, 756, 555, 999, 678}; long[] arr3 = new long[] { 767, 568, 555, 897, 678 }; Now, we can compare the equality of these arrays using the equals() method. Arrays.equals(arr1, arr2); Arrays.equals(arr2, arr3); Arrays.equals(arr1, arr3); The following is the complete example. Example Live Demo import java.util.*; public class Demo { public ... Read More
The System.out.format is used in Java to format output. Here, let’s say the following is our long. long val = 787890; To format, we have considered the following that justifies the output. System.out.format("%d%n", val); System.out.format("%9d%n", val); System.out.format("%+9d%n", val); System.out.format("%08d%n", val); System.out.format("%, 9d%n", val); The following is the complete example that displays the difference in output as well. Example Live Demo import java.util.Locale; public class Demo { public static void main(String []args) { long val = 787890; System.out.format("%d%n", val); ... Read More
These mysql_* functions are deprecated and other functions are available that gives better security and functionality. Note: As an alternative, use either _assoc or _row though. mysql_fetch_assoc The function returns an associative array of strings that corresponds to the fetched row, or FALSE if there are no more rows. The associativity array tells us about the key value pair, whereas the key tells about any column name and the value tells about the row value. Here we can map the column name as key and value as row. For example. Key is ID and value is corresponding name. ... Read More
Before getting into searchview example, we should know what is search view in android, search view is just like search box in HTML. we can search anything from particular list items.This example demonstrate about how to integrate search view in android.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. In the above code we are giving search view and listview because search view going to search element from ... Read More
For Hexadecimal, the 0x or 0X is to be placed in the beginning of a number. Note − Digits 10 to 15 are represented by a to f (A to F) in Hexadecimal Here are some of the examples of hexadecimal integer literal declared and initialized as int. int one = 0X123; int two = 0xABC; Example Live Demo public class Demo { public static void main(String []args) { int one = 0X123; int two = 0xABC; System.out.println("Hexadecimal: "+one); System.out.println("Hexadecimal: "+two); } } Output Hexadecimal: 291 Hexadecimal: 2748
The graphs can be implemented using Dictionary in Python. In the dictionary, each key will be the vertices, and as value, it holds a list of connected vertices. So the entire structure will look like Adjacency list of a graph G(V, E). We can use the basic dictionary object, but we are using default dict. It has some additional features. It has one additional writable instance variable. We are providing a text file, which contains the number of vertices, number of edges, names of vertices, and the list of edges. For undirected graph, we are providing two edges like ... Read More
We cant touch background thread to main thread directly so handler is going to collect all events which are available in main thread in a queue and posses this queue to looper class.In android Handler is mainly used to update the main thread from background thread or other than main thread. There are two methods are in handler.Post() − it going to post message from background thread to main thread using looper.sendmessage() − if you want to organize what you have sent to ui (message from background thread) or ui functions. you should use sendMessage().This example demonstrate about how to ... Read More
Like other languages, Python provides some inbuilt functions for reading, writing, or accessing files. Python can handle mainly two types of files. The normal text file and the binary files. For the text files, each lines are terminated with a special character '' (It is known as EOL or End Of Line). For the Binary file, there is no line ending character. It saves the data after converting the content into bit stream. In this section we will discuss about the text files. File Accessing Modes Sr.No Modes & Description 1 r It is Read ... Read More