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To generate a sum triangle of a given arrayGet the elements of the array from the user say, myArray[n].Create a two dimensional array say, result[n][n].Store the contents of the given array in the first row from bottom of the 2D array.result[n][i] = myArray[i].Now, from the second row of the 2D array fill elements such that ith element in each row is the sum of ith and (i+1)st elements of the previous row.result[i][j] = result[i+1][j] + result[i+1][j+1];Example Live Demoimport java.util.Scanner; public class SumTriangleOfAnArray { public static void main(String args[]){ Scanner sc = new Scanner(System.in); System.out.println("Enter ... Read More
Here we will see the ASCII NUL, ASCII 0 and the Numeric Literal 0. The ASCII null is represented as 0x00, and zero is represented as 0x30. The ASCII NUL character is used to denote the end of the string in C or C++. When programmer used ‘0’ (character 0) it is treated as 0x30. This is a hexadecimal number. The decimal equivalent is 48. To put ASCII NUL we have to mention ‘\0’ instead of ‘0’.char asciiNul = ‘\0’; int zero = 0; char zeroChar = ‘0’;The first one is ASCII NUL, second one is numeric 0, and the third one is character 0.
Here we will see how to generate random numbers, which are following in a normal distribution. For the normal random, the formula is like below.𝑧 = √−2 ln 𝑥1 cos (2𝜋𝑥2)Here x1 and x2 are chosen randomly.Example#include #include #include #include using namespace std; double rand_gen() { // return a uniformly distributed random value return ( (double)(rand()) + 1. )/( (double)(RAND_MAX) + 1. ); } double normalRandom() { // return a normally distributed random value double v1=rand_gen(); double v2=rand_gen(); return cos(2*3.14*v2)*sqrt(-2.*log(v1)); } main() { double sigma = 82.0; double Mi = 40.0; for(int i=0;i
The all important The FTP class in ftplib module implements the client side of the FTP protocol.To establish connection with a FTP server, obtain FTP object.con=FTP(hostname)The FTP class supports following methods −connect()Connect to the given host and port. The default port number is 21, as specified by the FTP protocol specification.Getwelcome()Return the welcome message sent by the server in reply to the initial connection.login(user='anonymous', passwd='', acct='')Log in as the given user. The passwd and acct parameters are optional and default to the empty string. If no user is specified, it defaults to 'anonymous'. If user is 'anonymous', the default passwd ... Read More
This example demonstrate about How to create everyday notifications at certain time in AndroidStep 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. Step 3 − Add the following code to src/MainActivity.package app.tutorialspoint.com.notifyme ; import android.app.AlarmManager ; import android.app.DatePickerDialog ; import android.app.Notification ; import android.app.PendingIntent ; import android.content.Context ; import android.content.Intent ; import android.os.Bundle ; import android.support.v4.app.NotificationCompat ; import android.support.v7.app.AppCompatActivity ; import android.view.View ; import android.widget.Button ; import android.widget.DatePicker ; import java.text.SimpleDateFormat ; import ... Read More
At first, set an Internal Frame in the JDesktopPane −JDesktopPane desktopPane = new JDesktopPane(); JInternalFrame intFrame = new JInternalFrame("Our Frame", true, true, true, true); desktopPane.add(intFrame);Now, set the bounds of the Internal Frame −intFrame.setBounds(50, 90, 200, 250);Create two components −JLabel label = new JLabel(intFrame.getTitle(), JLabel.CENTER); JButton button = new JButton("Demo Button");Add the two components to the Internal Frame −intFrame.add(label, BorderLayout.CENTER); intFrame.add(button, BorderLayout.WEST);The following is an example to display multiple components in an internal frame −package my; import java.awt.BorderLayout; import javax.swing.JButton; import javax.swing.JDesktopPane; import javax.swing.JFrame; import javax.swing.JInternalFrame; import javax.swing.JLabel; public class SwingDemo { public static void main(final String[] args) { ... Read More
Differences between Mean.io and Mean.jsThe MEAN is a stack framework. When combined with Mongodb, node.js, express.js and angular.js it helps to create a complete javascript web app. A software developer from Israel, Amos Haviv was the first person to initiate Mean.io. Mean.js is simply a fork out from Mean.io. When developers closely observe these two variations they perceive that Mean.io has a different objective than Mean.js. The only reason might be that Mean.io is not as elegant as Mean.js. When a developer completely understands Stack, mostly he prefers Mean.js.Let's look where Mean.io and Mean.js differ1) Boilerplate generation and scaffoldingThese are ... Read More
Use $elemMatch fir this with $setLet us first create a collection with documents −> dbkeyValueDemoinsertOne( { "_id" : new ObjectId(), "CustomerDetails" : [ { "Name" : "Chris", "Age" :24, }, { "Name" : "Robert", "Age" :29, }, { "Name" : "David", ... Read More
A DATALINK object represents an URL value which refers to an external resource (outside the current database/data source), which can be a file, directory etc.You can store a DATALINK into an SQL table using the setURL() method of the PreparedStatement interface. This method accepts an integer value representing an index of the bind variable, an URL object and, inserts the given URL object in the column represented by the bind variable in the specified index.ExampleLet us create a table with name tutorials_data in MySQL database using CREATE statement as shown below −CREATE TABLE tutorials_data ( tutorial_id INT PRIMARY KEY ... Read More
For this, you can use GROUP BY HAVING clause. Let us first create a table −mysql> create table DemoTable -> ( -> Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> Subject varchar(100) -> ); Query OK, 0 rows affected (0.53 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(Subject) values('MySQL'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable(Subject) values('MongoDB'); Query OK, 1 row affected (0.09 sec) mysql> insert into DemoTable(Subject) values('MySQL'); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable(Subject) values('Java'); Query OK, 1 ... Read More