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Regardless of the programming language, memory life cycle is pretty much always the same −Allocate the memory you needUse the allocated memory (read, write)Release the allocated memory when it is not needed anymoreThe second part is explicit in all languages. Use of allocated memory needs to be done by the developer.The first and last parts are explicit in low-level languages like C but are mostly implicit in high-level languages like JavaScript.Hence there is no explicit way to allocate or free up memory in JavaScript. Just initializing objects allocates memory for them. When the variable goes out of scope, it is ... Read More
In the JavaScript, Event Flow process is completed by three concepts −Event Target − The actual DOM object on which the event occured.Event Bubbling − Explained belowEvent Capturing − Explained belowEvent bubbling is the order in which event handlers are called when one element is nested inside a second element, and both elements have registered a listener for the same event (a click, for example). With bubbling, the event is first captured and handled by the innermost element and then propagated to outer elements.With capturing, the event is first captured by the outermost element and propagated to the inner elements.Let's ... Read More
A number represented by the array is stored in such a form that each digit of the number is represented by an element of the array. For example, Number 234 in array is {2, 3, 4}.To add to such numbers we will first add number at the least significant digit and if the sum is greater than 10 propagate the carry. After this, we will go for the next consecutive digits of the array doing the same procedure and finding the sum.Let’s take an example to add two numbers −a = {2, 9, 6} b = {6, 3, 8} Output: ... Read More
To create a custom object in JavaScript, try the following codeExampleLive 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.";
Here are 10 tricky programs that will test your programming basics.1. Program to print “ ” in C++In C++ programming language, we use quotes to denote the start and end of the text is to be printed. So, printing quotes “ needs a special escape sequence. So, we will use the \” to print quotes in c++.Example Live Demo#include using namespace std; int main() { cout
To use OR condition in JavaScript IF statement, use the || operator i.e Logical OR operator. If any of the two operands are non-zero, then the condition becomes true.Here’s how you can use the operator || in JavaScriptExampleLive Demo var a = true; var b = false; document.write("(a || b) => "); result = (a || b); document.write(result);
A greedy algorithm is an algorithm used to find an optimal solution for the given problem. greedy algorithm works by finding locally optimal solutions ( optimal solution for a part of the problem) of each part so show the Global optimal solution could be found.In this problem, we will use a greedy algorithm to find the minimum number of coins/ notes that could makeup to the given sum. For this we will take under consideration all the valid coins or notes i.e. denominations of { 1, 2, 5, 10, 20, 50 , 100, 200 , 500 ,2000 }. And we ... Read More
C++ Programming languageA successor of the c programming language that has introduced the concept of classes and objects. It encapsulates features of c and high-level language hence it can be treated as an intermediate-level language. When it was created it was thought of as a C that has classes because of its similarities with C.C# Programming LanguageC# (also known as C sharp) is a general-purpose programming language that was developed by Microsoft to run on .net framework for developing applications for its operating system. It is an object-oriented programming language with features like object-oriented, statically typed, decorative, multiparadigm programming language.Both ... Read More
A file is a memory location that stores word streams. In a file, there are various words. In this program, we will find all unique words from the file and print them.A unique word means the number of occurrences of the word is one in the file.For example, Tutorials point is best for programming tutorials.Here, the word tutorial occurs more than once, hence it is not unique. Rest all words are unique.AlgorithmTo check for unique words in the given file. Using iterator with two variables : data and occurence. Input : File Step 1 : Read each line from the ... Read More
The String object lets you work with a series of characters; it wraps Javascript's string primitive data type with a number of helper methods. As JavaScript automatically converts between string primitives and String objects, you can call any of the helper methods of the String object on a string primitive.Following are some of the methods available for strings in JavaScript −concat() −Combines the text of two strings and returns a new string.indexOf() −Returns the index within the calling String object of the first occurrence of the specified value, or -1 if not found.lastIndexOf() −Returns the index within the calling String ... Read More