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This example demonstrate about How to Sort a stack 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 have taken a text view to show sorted stack.Step 3 − Add the following code to src/MainActivity.javapackage com.example.myapplication; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.v7.app.AppCompatActivity; import android.widget.TextView; import java.util.Collections; import java.util.HashSet; import java.util.LinkedHashSet; import java.util.LinkedList; import java.util.Stack; public class MainActivity extends AppCompatActivity { ... Read More
The setAtX() method is used to set Octet value in Java. Here, X is the index wherein you need to set the value i.e. to set value at index 1, use the setAt1() and value as a parameter.Let us first see what we need to work with JavaTuples. To work with Octet class in JavaTuples, you need to import the following package −import org.javatuples.Octet;Note − Download JavaTuples Jar library to run JavaTuples program. If you are using Eclipse IDE, then Right Click Project -> Properties -> Java Build Path -> Add External Jars and upload the downloaded JavaTuples jar file. ... Read More
In iOS apps sometimes we need to restrict our text field to take only numbers as an input, this can be done in several ways, let’s see some of them.Method 1: Changing the Text Field Type from storyboard.Select the text field that you want to restrict to numeric input.Go to its attribute inspector.Select the keyboard type and choose number pad from there.Method 2: Programmatically limiting inputs to number.Select the text fieldCreate its outlet in the view controller.Conform the view controller to UITextFieldDelegateSet the text field’s delegateAdd the following functionfunc textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool ... Read More
In this section we will see how to generate the time delay using 8085 programs. The delay will be used in different places to simulate clocks, or counters or some other area.When the delay subroutine is executed, the microprocessor does not execute other tasks. For the delay we are using the instruction execution times. executing some instructions in a loop, the delay is generated. There are some methods of generating delays. These methods are as follows.Using NOP instructionsUsing 8-bit register as counterUsing 16-bit register pair as counter.Using NOT instructions:One of the main usage of NOP instruction is in delay generation. ... Read More
This example demonstrate about How to find middle element in a array 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 have taken a text view to find the middle element.Step 3 − Add the following code to src/MainActivity.javapackage com.example.myapplication; import android.os.Build; import android.os.Bundle; import android.support.annotation.RequiresApi; import android.support.v7.app.AppCompatActivity; import android.widget.TextView; import java.lang.reflect.Array; import java.util.LinkedList; public class MainActivity extends AppCompatActivity { @RequiresApi(api = ... Read More
To search for a value in Ennead Tuple in Java, use the contains() method. The value you want to search is to be set as the parameter of the method. The contains() method returns a Boolean value i.e TRUE if the value exist, else FALSE. Let us first see what we need to work with JavaTuples. To work with Ennead class in JavaTuples, you need to import the following package −import org.javatuples.Ennead;Note − Download JavaTuples Jar library to run JavaTuples program. If you are using Eclipse IDE, then Right Click Project -> Properties -> Java Build Path -> Add External ... Read More
You can use COALESCE() function for this. In the COALESCE() function, it returns the first NON NULL value from the column. To understand the concept, let us first create a demo tablemysql> create table combineTwoColumnsDemo -> ( -> UserId int, -> UserName varchar(20), -> UserAge int -> ); Query OK, 0 rows affected (1.12 sec)Insert some records in the table using insert command. The query is as follows −mysql> insert into combineTwoColumnsDemo values(101, 'John', 23); Query OK, 1 row affected (0.16 sec) mysql> insert into combineTwoColumnsDemo values(102, 'Carol', 20); Query OK, 1 row affected (0.14 ... Read More
The get() method of the AbstractList class is used to get the element at the specified position in the list. It returns the element at the position set as parameter.The syntax is as follows:public abstract E get(int index)Here, index is the index of the element to return.To work with the AbstractList class, import the following package:import java.util.AbstractList;The following is an example to implement get() method of the AbstractlList class in Java:Exampleimport java.util.LinkedList; import java.util.AbstractList; public class Demo { public static void main(String[] args) { AbstractList myList = new LinkedList(); myList.add(50); ... Read More
To add navigation bar programmatically we’ll go through a series of steps that are mentioned below. We’ll be doing this in ViewWillLayoutSubviews method of our viewController.Getting the width of the current View.let width = self.view.frame.widthCreating a navigation bar with the width of our current view and height of 44 px which is the default height of a navigation bar.let navigationBar: UINavigationBar = UINavigationBar(frame: CGRect(x: 0, y: 0, width: width, height: 44))Adding the newly created navigation bar to our view.self.view.addSubview(navigationBar)We can further extend this example to add a title and a button to our View. The complete result should look something ... Read More
You need to create event to drop table after x hours. The syntax is as follows −CREATE EVENT yourEventName ON SCHEDULE AT CURRENT_TIMESTAMP + INTERVAL x HOUR DO DROP TABLE IF EXISTS yourTableName;Let us first create a table −mysql> create table DemoTable ( StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY, StudnetFirstName varchar(20), StudentLastName varchar(20), StudnetAge int ); Query OK, 0 rows affected (0.52 sec)Now implement the above event in order to drop table after 2 hours −mysql> CREATE EVENT drop_table_event_after2HoursDemo ON SCHEDULE AT CURRENT_TIMESTAMP + INTERVAL 2 HOUR DO DROP TABLE IF EXISTS DemoTable; Query OK, ... Read More