Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
Articles on Trending Technologies
Technical articles with clear explanations and examples
Egg Dropping Puzzle
This is a famous puzzle problem. Suppose there is a building with n floors, if we have m eggs, then how can we find the minimum number of drops needed to find a floor from which it is safe to drop an egg without breaking it.There some important points to remember −When an egg does not break from a given floor, then it will not break for any lower floor also.If an egg breaks from a given floor, then it will break for all upper floors.When an egg breaks, it must be discarded, otherwise, we can use it again.Input and ...
Read MoreEdit Distance\\n
There are two strings given. The first string is the source string and the second string is the target string. In this program, we have to find how many possible edits are needed to convert first string to the second string. The edit of strings can be either Insert some elements, delete something from the first string or modify something to convert into the second string.Input and OutputInput: Two strings to compare. string 1: Programming string 2: Programs Output: Enter the initial string: Programming Enter the final string: Programs The number of changes required to convert Programming to Programs is 4AlgorithmeditCount(initStr, ...
Read MoreFind the minimum cost to reach destination using a train
For this problem, there are N stops on a journey. The vehicle starts the journey from stop 0 to N-1. In a table, ticket costs for all pair of stations are given. We have to find the minimum cost to reach the destination with those given costs.Input and OutputInput: The cost matrix of the journey. 0 15 80 90 ∞ 0 40 50 ∞ ∞ 0 70 ∞ ∞ ∞ 0 Output: The minimum cost is 65. At first go to the destination 1 from 0. (cost 15), then 1 to 4 (cost 50). So total cost 65.AlgorithmfindMinCost(cost)Input − ...
Read MoreSnake and Ladder Problem
We know about the famous game Snake and Ladder. In this game, some rooms are present on the board, with the room number. Some rooms are connected with a ladder or with snakes. When we get a ladder, we can climb up to some rooms to reach near to the destination without moving sequentially. Similarly, when we get some snake, it sends us to a lower room to start the journey again from that room.In this problem, we have to find the minimum number of the dice throw is required to reach start to destination.Input and OutputInput: The starting and ...
Read MoreTransitive closure of a Graph
Transitive Closure it the reachability matrix to reach from vertex u to vertex v of a graph. One graph is given, we have to find a vertex v which is reachable from another vertex u, for all vertex pairs (u, v).The final matrix is the Boolean type. When there is a value 1 for vertex u to vertex v, it means that there is at least one path from u to v.Input and OutputInput: 1 1 0 1 0 1 1 0 0 0 1 1 0 0 0 1 Output: The matrix of transitive closure 1 1 1 ...
Read MoreHow do I print a message to the error console using JavaScript?
To print a message to the error console, use the console object. Here’s an example −The following will show a red error message −console.error(message);The following gives you the default message −console.log(message);The following gives you the warning message −console.warn(message);The following gives an information message −console.info(message);Add CSS to the log message −console.log('%c Add message!, "background: green; color: white;");Use the following to print error. Consider “num” as the variable name −console.error('num=%d', num);For complete API reference, refer Console API Reference.
Read MoreLayers of canvas fabric.js
FabricJS has the following API methods that change the z-index of objects:canvas.sendBackwards(myObject) canvas.sendToBack(myObject) canvas.bringForward(myObject) canvas.bringToFront(myObject)You can also use:fabric.Canvas.prototype.orderObjects = function(compare) { this._objects.sort(compare); this.renderAll(); }
Read MoreCheck For Star Graph
A graph is given; we have to check the given graph is a star graph or not.By traversing the graph, we have to find the number of vertices has degree one, and number of vertices, whose degree is n-1. (Here n is the number of vertices in the given graph). When the number of vertices with degree 1 is n-1 and a number of vertices with a degree (n-1) is one, then it is a star graph.Input and OutputInput: The adjacency matrix: 0 1 1 1 1 0 0 0 1 0 0 0 1 0 0 0 Output: ...
Read MoreHow to create JavaScript objects using new operator?
The new keyword in JavaScript is the new operator, which creates an instance of a user-defined object type.ExampleYou can try to run the following code to create JavaScript objects using new operator −Live Demo var dept = new Object(); dept.employee = "Amit"; dept.department = "Technical"; dept.technology ="Java"; document.getElementById("test").innerHTML = dept.employee + " is working on " + dept.technology + " technology."; OutputAmit is working on Java technology.
Read MoreHow I can set the width and height of a JavaScript alert box?
To set the width and height of an alert box in JavaScript, you need to use the custom alert box. This alert box is styled with CSS.Set the width and height of the alert box using the following code, which uses jQuery, a JavaScript library −Example function functionAlert(msg, myYes) { var confirmBox = $("#confirm"); confirmBox.find(".message").text(msg); confirmBox.find(".yes").unbind().click(function() ...
Read More