Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
A common question in Java OOPs is whether abstract classes can have parameterized constructors. Yes, we can define a parameterized constructor in an abstract class. What is a Parameterized Constructor in Java A parameterized constructor is a special type of class constructor that accepts parameters/arguments when creating an object. Unlike a default (no-arg) constructor, it allows you to initialize an object with specific values at the time of creation. Syntax The Following is the syntax: public class ClassName { private dataType field1; private dataType field2; // Parameterized ... Read More
Questions related to Java exception handling are very frequent in interviews for many companies and even in exams. One such question that an interviewer might ask is whether there is a case when the finally block does not execute in Java. We will try to find the answer to this question in the simplest way possible. In Java, the finally block is designed to execute regardless of whether an exception is thrown or handled in the try-catch blocks. However, finally block may not execute if System.exit() is called either inside try or catch block. Before moving to the question, ... Read More
To find the length of an array in C++, we can use various functions and approaches that we are going to discuss in this article. Finding the length of an array is a very common task and is used in looping through an array, sorting the array, finding maximum and minimum, and in many more scenarios. In this article, we have an array and our task is to find the length of the array in C++. Approaches to Find Length of Array Here is a list of approaches to find the length of an array in C++ which ... Read More
Variable length arrays can have a size as required by the user i.e they can have a variable size. A Variable−Length Array (VLA) is an array whose length is determined at runtime (not compile-time). Variable Length Array Using Vector A vector is defined by the resizable array that is part of data structures and is used to store multiple elements from the same data type. A variable length array can be created using the Vector. Syntax Following are the syntaxes that uses to modify the size dynamically using vector − // inserting the array element push_back() and, // ... Read More
A parallel array is a structure that contains multiple arrays. Each of these arrays are of the same size and the array elements are related to each other. All the elements in a parallel array represent a common entity. Here, we provide the basic example to understand the parallel array in C++ − employee_name = { Harry, Sally, Mark, Frank, Judy } employee_salary = {10000, 5000, 20000, 12000, 5000} Here, The name and salary of 5 different employees is stored in two different arrays. Example of Parallel Arrays This is an implementation of a parallel array ... Read More
What is Harmonic Progression? A Harmonic Progression is a sequence of numbers formed by the reciprocal of an Arithmetic progression sequence. If a given sequence a1, a2, a3, a4... is in Arithmetic progression, then 1/a1, 1/a2, 1/a3, 1/a4... forms a Harmonic Progression. Formula for the nth term of Harmonic Progression? The formula for the nth term of a Harmonic Progression is: Tn = 1 / (1/a1 + (n - 1) * d) where: a1 is the first term of the Harmonic Progression. d is the common difference of the corresponding Arithmetic ... Read More
How to Add a Parameter for an Object in HTML The tag is used to define a parameter of an HTML element. The tag does not contain a closing tag. The tag supports all browsers, but the file format defined in an object may not support it. It also supports the global and event attributes in HTML. Below is the syntax − The tag is deprecated and is no longer recommended. While some browsers might still support it, it has been removed from the relevant web standard and is only maintained for ... Read More
To extract email addresses from Gmail Messages, you have to use google sheets also Apps Script for automation. Open a New google sheets and navigate to Extensions. Then, set up script that scan your mailbox and lists sender emails address in the google sheets automatically. Here's is step-by-step procedure to extract email addresses from Gmail messages is given follow these steps:- Step 1: Open Google Sheets Go to Google Sheets and create a new or Blank sheets. Step 2: Open Apps Script Click on Extension on clicking you will see many option among them select Apps Script. Step 3: ... Read More
In this article, we will learn how to deallocate a 2D array in C++. A 2D array is an array of arrays, where each element points to another array. When you dynamically allocate a 2D array, memory is reserved for each row and the main array on the heap. Deallocating memory means freeing the memory that was previously allocated for the 2D array so it can be reused. In C++, this involves deleting each row first and then deleting the main array. Deallocating a 2D Array in C++ In C++, a 2D array can be dynamically allocated in ... Read More
To write a JavaScript program for equilibrium index of an array, we are going to discuss three different approaches with detailed explanation and example codes. The equilibrium index of an array is the position where the sum of the elements to its left and right equals one another. In this article we are having an array of integers, our task is to to write a JavaScript program for equilibrium index of an array. Example Input: arr = [-7, 1, 5, 2, -4, 3, 0] Output: Equilibrium index: 3 At index 3, left sum = -7 + ... Read More