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Binary Search Tree is a binary tree data structure in which we have 3 properties −The left subtree of a binary search tree of a node contains only nodes with keys lesser than the node’s key.The right subtree of a binary search tree node contains only nodes with keys greater than the node’s key.The left and right of a subtree each must also be a binary search tree.AlgorithmBegin function BSTUtill() If node is equals to NULL then Return 1. If data of node is less than minimum or greater ... Read More
This example demonstrate about How to add dividers and spaces between items in RecyclerViewStep 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 have taken recycerview.Step 3 − Add the following code to src/MainActivity.javapackage com.example.myapplication; import android.annotation.TargetApi; import android.os.Build; import android.os.Bundle; import android.support.v4.content.ContextCompat; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.DefaultItemAnimator; import android.support.v7.widget.DividerItemDecoration; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.support.v7.widget.Toolbar; import android.widget.TextView; import android.widget.Toast; import ... Read More
Let us first create an ArrayList −ArrayList < Integer > arrList = new ArrayList < Integer > (); arrList.add(100); arrList.add(200); arrList.add(300); arrList.add(400); arrList.add(500);Now, create a ListIterator from the above ArrayList and insert more elements −ListIterator < Integer > iterator = arrList.listIterator(); iterator.add(1000); iterator.add(2000); iterator.add(3000);Example Live Demoimport java.util.ArrayList; import java.util.ListIterator; public class Demo { public static void main(String[] args) { ArrayListarrList = new ArrayList(); arrList.add(100); arrList.add(200); arrList.add(300); arrList.add(400); arrList.add(500); arrList.add(600); arrList.add(700); arrList.add(800); ... Read More
The C Preprocessor is not a part of the compiler, but is a separate step in the compilation process. In simple terms, a C Preprocessor is just a text substitution tool and it instructs the compiler to do required pre-processing before the actual compilation. We'll refer to the C Preprocessor as CPP.All preprocessor commands begin with a hash symbol (#). It must be the first nonblank character, and for readability, a preprocessor directive should begin in the first column. The following section lists down all the important preprocessor directives −Sr.NoDirectives & Descriptions1#defineSubstitutes a preprocessor macro.2#includeInserts a particular header from another ... Read More
Here we will see how to initialize the private static member variables initialization in C++. We can put static members (Functions or Variables) in C++ classes. For the static variables, we have to initialize them after defining the class.To initialize we have to use the class name then scope resolution operator (::), then the variable name. Now we can assign some value.The following code will illustrate the of static member initializing technique.Example#include using namespace std; class MyClass{ private: static int st_var; public: MyClass(){ st_var++; //increase the value ... Read More
Flutter is an open source mobile app development kit from Google. It works with the existing code and is an excellent SDK (Software Development Kit) to develop iOS and Android programs. It is cost effective and eases the complexity of developing iOS and Android apps. It is primarily used for creating an application in Google Fuchsia.The main advantage of Flutter is that a lot of code can be shared between platforms. Without writing platform-specific code, the developers can use it to develop applications for Android and iOS alike. Being an Open source SDK, it makes every application look like a ... Read More
Before getting into example, we should know what sqlite data base in android is. SQLite is an open source SQL database that stores data to a text file on a device. Android comes in with built in SQLite database implementation. SQLite supports all the relational database features. In order to access this database, you don't need to establish any kind of connections for it like JDBC, ODBC etc.This example demonstrate about How to print julianday in Android sqliteStep 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create ... Read More
To connect with a data base, you need toRegister the DriverSelect the required database register the Driver class of the particular database using the registerDriver() method of the DriverManager class or, the forName() method of the class named Class.DriverManager.registerDriver(new com.mysql.jdbc.Driver());Get connectionCreate a connection object by passing the URL of the database, username and password of a user in the database (in string format) as parameters to the getConnection() method of the DriverManager class.Connection mysqlCon = DriverManager.getConnection(mysqlUrl, "root", "password");And, to extract data you need to execute the select query as:ResultSet rs = stmt.executeQuery("Select * from Employee");To print the contents of the ... Read More
The tag removes a variable from either a specified scope or the first scope where the variable is found (if no scope is specified). This action is not particularly helpful, but it can aid in ensuring that a JSP cleans up any scoped resources it is responsible for.AttributeThe tag has the following attributes −AttributeDescriptionRequiredDefaultvarName of the variable to removeYesNonescopeScope of the variable to removeNoAll scopesExample Tag Example Before Remove Value: After Remove Value: The above code will generate the following result −Before Remove Value: 4000 After Remove Value:
The Period can be obtained with the given number of months using the ofMonths() method in the Period class in Java. This method requires a single parameter i.e. the number of months and it returns the Period object with the given number of months.A program that demonstrates this is given as follows −Example Live Demoimport java.time.Period; public class Demo { public static void main(String[] args) { int months = 11; Period p = Period.ofMonths(months); System.out.println("The Period is: " + p); ... Read More