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An array of integers is given. We have to find sum of all elements which are contiguous. Whose sum is largest, that will be sent as output.Using dynamic programming we will store the maximum sum up to current term. It will help to find sum for contiguous elements in the array.Input: An array of integers. {-2, -3, 4, -1, -2, 1, 5, -3} Output: Maximum Sum of the Subarray is : 7AlgorithmmaxSum(array, n)Input − The main array, the size of the array.Output − maximum sum.Begin tempMax := array[0] currentMax = tempMax for i := 1 to n-1, ... Read More
The getTableTypes() method of the DatabaseMetadata interface is used to find out the type of tables supported by the underlying database.This method returns a ResultSet object holding the names of table types in each row in String format, under the column TABLE_TYPE.To get the description DatabaseMetadata object.Make sure your database is up and running.Register the driver using the registerDriver() method of the DriverManager class. Pass an object of the driver class corresponding to the underlying database.Get the connection object using the getConnection() method of the DriverManager class. Pass the URL the database and, user name, password of a user in the database, ... Read More
Let’s say, here we are incrementing StudentScores for MongoDB which is inside StudentDetails −... "StudentScores": { ... "StudentMathScore": 90, ... "StudentMongoDBScore": 78 ... }Let us first create a collection with documents −> db.embeddedValueIncrementDemo.insertOne( ... { ... "StudentDetails": { ... "StudentScores": { ... "StudentMathScore": 90, ... "StudentMongoDBScore": 78 ... } ... } ... } ... ); { "acknowledged" : true, "insertedId" : ObjectId("5cd2b670345990cee87fd896") }Following is the query to display ... Read More
With echo char, you can set a character that would appear whenever a user will type the password in the JPasswordField.Let us first create a new JPassword field −JPasswordField passwd = new JPasswordField();Now, use the setEchoChar() to set the echo char for password field. Here, we have asterisk (*) as the field for password −passwd.setEchoChar('*');The following is an example to set echo char for password field −Examplepackage my; import java.awt.GridLayout; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPasswordField; import javax.swing.JTextField; import javax.swing.SwingConstants; public class SwingDemo { public static void main(String[] args) throws Exception { JFrame frame = new ... Read More
Use the JOptionPane.showInputDialog() to get input from user in a dialog box like “Which sports you play the most”, “What is your name”, etc. The following is an example to create input Pop-Ups (Dialog) and get input from user −Examplepackage my; import javax.swing.JOptionPane; public class SwingDemo { public static void main(String[] args) { String[] sports = { "Football", "Cricket", "Squash", "Baseball", "Fencing", "Volleyball", "Basketball" }; String res = (String) JOptionPane.showInputDialog(null, "Which sports you play the most?", "Sports", JOptionPane.PLAIN_MESSAGE, null, sports, sports[0]); switch (res) { ... Read More
The $gt is for greater than, wherein select those documents where the value of the field is greater than the specified value. Let us first create a collection with documents −> db.performQueryDemo.insertOne({"PlayerDetails":{"PlayerScore":1000, "PlayerLevel":2}, "PlayerName":"Chris"}); { "acknowledged" : true, "insertedId" : ObjectId("5cd7eba41a844af18acdffa9") } > db.performQueryDemo.insertOne({"PlayerDetails":{"PlayerScore":0, "PlayerLevel":1}, "PlayerName":"Robert"}); { "acknowledged" : true, "insertedId" : ObjectId("5cd7ebbb1a844af18acdffaa") } > db.performQueryDemo.insertOne({"PlayerDetails":{"PlayerScore":-10, "PlayerLevel":0}, "PlayerName":"Larry"}); { "acknowledged" : true, "insertedId" : ObjectId("5cd7ebd41a844af18acdffab") } > db.performQueryDemo.insertOne({"PlayerDetails":{"PlayerScore":1, "PlayerLevel":1}, "PlayerName":"David"}); { "acknowledged" : true, "insertedId" : ObjectId("5cd7ebe31a844af18acdffac") }Following is the query to display all documents from a collection with the help of ... Read More
This is the program to find closest pair of points in an array.AlgorithmsFor Distance between Closest pointBegin Declare function Closest_dist_Spoint(poi stp[], int s, double dist, poi &pnt1, poi &pnt2) to the double datatype. Declare Minimum to the double datatype. Initialize Minimum = dist. for (int i = 0; i < s; ++i) for (int j = i+1; j < s && (stp[j].poi2 - stp[i].poi2) < Minimum; ++j) if (Distance(stp[i], stp[j]) < Minimum) then Minimum = Distance(stp[i], stp[j]). ... Read More
Whenever you inherit a superclass a copy of superclass’s members is created at the subclass and you using its object you can access the superclass members.If the superclass and the subclass have instance variable of same name, if you access it using the subclass object, the instance variables of the subclass hides the instance variables of the superclass irrespective of the types. This mechanism is known as field hiding or, instance variable hiding.But, since it makes code complicated field hiding is not recommended.ExampleIn the following example we have two classes Super and Sub one extending the other. They both have ... Read More
The HTML DOM Input Checkbox Object represents an input HTML element with type checkbox.SyntaxFollowing is the syntax −Creating an with type checkboxvar checkboxObject = document.createElement(“input”); checkboxObject.type = “checkbox”;AttributesHere, “checkboxObject” can have the following attributes −AttributesDescriptionautofocusIt defines if the checkbox should be focused on initial page load.checkedIt defines the state of checkbox i.e. checked/unchecked.defaultCheckedIt returns the default value of checked attribute i.e. true/falsedefaultValueIt sets/returns the default value of checkboxdisabledIt defines if checkbox is disabled/enabledformIt returns a reference of enclosing form that contains the checkboxindeterminateIt sets/returns indeterminate state of checkboxnameIt defines the value of name attribute of a checkboxrequiredIt defines if ... Read More
The HTML DOM Input FileUpload autofocus property sets/returns whether Input FileUpload is focused upon initial page load.SyntaxFollowing is the syntax −Returning boolean value - true/falseinputFileUploadObject.autofocusSetting autofocus to booleanValueinputFileUploadObject.autofocus = booleanValueBoolean ValuesHere, “booleanValue” can be the following −booleanValueDetailstrueIt defines that input will be autofocused on page load.falseIt is the default value and input is not autofocused.ExampleLet us see an example of Input FileUpload autofocus property − Live Demo Input FileUpload autofocus form { width:70%; margin: 0 auto; text-align: center; } * { padding: 2px; ... Read More