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Articles by Vrundesha Joshi
218 articles
C++ Program to Implement Adjacency Matrix
The adjacency matrix of a graph is a square matrix of size V x V, that represent a finite graph data structure using a 2D array, where V is number of edges of the graph. The each non zero elements in the matrix represent an edges of the graph. For example, if the graph has some edges from i to j vertices, then in the adjacency matrix at i th row and j th column it will be 1 (or some non-zero value for weighted graph), otherwise that value will be 0. In this article, we will learn how to ...
Read MoreC++ Program to Check the Connectivity of Undirected Graph Using BFS
The Breadth-First Search (BFS) algorithm is a graph traversal algorithm that starts at the tree root and explores all nodes at the present depth before moving to the nodes at the next level. In this article, we will discuss how to check the connectivity of a graph using BFS traversal algorithm. Understanding Connectivity of a Graph A graph is said to be connected if there is a path between every pair of vertices. To check connectivity of a graph, we will try to traverse all nodes using any traversal algorithm. After completing the traversal, if there is any ...
Read MoreHow to draw an SVG file on an HTML5 canvas?
To draw SVG onto canvas, you need to use SVG image. Firstly, use the element which contains the HTML. After that, you need to draw the SVG image into the canvas.ExampleYou can try the following code to draw an SVG file on an HTML canvas SVG file on HTML Canvas var canvas = document.getElementById('myCanvas'); var ctx = canvas.getContext('2d'); var data = '' + ...
Read MoreIntel 8212 in mode 1
The figure below shows the working of 8212 in mode 1Fig: Working of 8212 in mode 1We use this mode generally when we want 8212 to function as an output port. Here, microprocessor drives DI7-0, and the device at the output receives the information on Do7-0. The clock to the latches is provided in this mode. 8212 latches the information on DI7-0 when the CS makes transition from high to low. The CS signal gets activates when INT* is transferred by the interrupts by the driven data transfer scheme which is always performed when desired. The buffer at the output ...
Read MoreHow to create a left-arrow button on a Toolbar on iPhone/iPad?
To create a button on toolbar we'll need to use two different components of iOS and another image that is a back arrow. Before that let's see what those components areToolbar − Toolbar is a native iOS component that is used to display items or toolbar on the bottom of screen.Bar Button item − It is a button that's usually created on a Toolbar or a navigation bar.When a toolbar is created using storyboard, it comes with a Bar button item.Let's start by creating a new project, in the main.storyboard give some background color to the only viewController we have.From ...
Read MoreHow to replace a character in Objective-C String for iPhone SDK?
To replace a character in objective C we will have to use the inbuilt function of Objective C string library, which replaces occurrence of a string with some other string that we want to replace it with.To create a string in objective C we need to write −NSString *str = @"tutori@als";Now we have a choice of replacing characters in this string and creating new one, or modify this same string. In this example we will modify this string and print in the next line.str = [str stringByReplacingOccurrencesOfString:@"@" withString:@""]; NSLog(@”%@”, str);When we run the above code, str is replaced with “tutorials” ...
Read MoreHow to navigate from one view controller to another in iOS?
To navigate from one view Controller to another view Controller in iOS, we need to use Navigation controller. Navigation controller manages a stack of View controller when we go from one view to another view.Navigation from one view controller to another view controller can be done like mentioned below.Step 1 − Create a View controller object.let vc = self.storyboard?.instantiateViewController(withIdentifier: "VC2ViewController") as! VC2ViewControllerIn this step we initialize an object of the type of our another view controller, to which we want to navigate. The identifier variable should be same as the identifier of our second view controller.Step 2 − Navigating to ...
Read MoreHow to use Bold & Non-Bold Text In A Single UILabel in iOS/iPhone?
To use a Bold and a regular/Non-Bold text in a single UILabel, we can either use a storyboard editor to achieve the same, or we can do it programmatically. Let’s see both of them.Method One − Editing with StoryboardSelect the label you want to edit, go to it’s attribute inspector.From the first option Text, select Attributes instead of plain.Write the following text in the label “Bold Regular”Double Click on Bold to select it, and then right click on it to see more options.Select font > Bold from that option. It should do the task.Method Two − Programmatically Achieving the result.Add the ...
Read MoreCan we use LIKE and OR together in MySql?
You can use LIKE with OR operator which works same as IN operator.Let us see the syntax for both the cases −Case 1 − Using Like with OR operator.select *from yourTableName where yourColumnName Like ‘Value1’ or yourColumnName Like ‘Value2’ or yourColumnName Like ‘Value3’ . . . NCase 2 − Using IN operator.select *from yourTableName where IN(value1, value2, value3, .....N);To understand both the syntaxes, let us create a table. The query to create a table is as follows −mysql> create table LikeDemo −> ( −> Id varchar(20) −> ); Query OK, 0 rows affected (0.58 sec)Now you can insert records in ...
Read Moreint(5) vs. int(10) in MySQL?
The value in the parentheses is used to display only the width and sets the zerofill. The width is 5 for int(5), whereas 10 for int(10). Let us see another example with a different width value set for int.Let us first create a table. Here, we have set the int to int(11) and int(13). The following is the query to create a table −mysql> create table intVsIntAnyThingDemo −> ( −> Number1 int(11) unsigned zerofill, −> Number int(13) unsigned zerofill −> ); Query OK, 0 rows affected (1.17 sec)Now you can insert record in the table with the help of insert ...
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