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The java.util.LinkedList class represents a linked list in Java, specifically a doubly-linked list, i.e., we can traverse through the list either from the beginning or from the end, whichever is closer to the specified index. We can create and perform various operations on a linked list using the methods provided by this class. In this article, we will understand how to find the middle element of a LinkedList using Java. We will use the following ways to do so: Using a While Loop Using size() Method Using ... Read More
The “this" keyword in Java is used as a reference to the current object within an instance method or a constructor. Using this, you can refer to the members of a class, such as constructors, variables, and methods. Calling a Method using "this" From a Constructor Yes, as mentioned, we can call all the members of a class (methods, variables, and constructors) from instance methods or constructors. Example In the following Java program, the Student class contains two private variables, name and age, with setter methods and a parameterized constructor that accepts these two values. From the constructor, we are ... Read More
An array in C++ is a data structure used to store multiple values of the same type in a contiguous block of memory. To know that how values shift from one index to the next, a common and practical technique is to compute the absolute difference between each pair of consecutive elements. Absolute Difference The absolute difference is the positive distance between two numbers, regardless of which one is larger. It is computed using the abs() function from the library. Absolute difference between a and b is denoted as |a - b|. For example, |7 - 3| = ... Read More
While developing softwares, the big projects become difficult to manage on mere text editors. So using an IDE makes it more smoother and productive. In this article we will discuss the popular IDE's for working with C++ programs on a Linux environment. We will compare the features of various IDEs and help you choose the best one for your needs. Best IDE's for C++ Programming Here is the list of best IDE's for C++ programming in Linux. Visual Studio Code (VS Code) Code::Blocks Eclipse ... Read More
In this article, we implement a C++ program to find the number that occurs an odd number of times in an array, using different approaches. We are given an array containing multiple elements, and our task is to identify the number that appears an odd number of times. For example, consider the array: [1, 2, 1, 3, 3, 2, 2]. In this case, the number 2 appears 3 times, which is odd. Example Scenarios Let's look at a few example scenarios to understand the problem: Input: arr[] = {5, 7, 8, 8, 5, 8, 8, 7, 7} ... Read More
An array in C++ is a collection of elements of the same data type stored in contiguous memory locations. Arrays provide a way to store multiple values using a single variable name, and each element can be accessed using an index starting from 0. Even and Odd Indexed Elements in an Array Each element in an array has an index. Indexes that are divisible by 2 (like 0, 2, 4, etc.) are known as even indexes, while indexes that are not divisible by 2 (like 1, 3, 5, etc.) are referred to as odd indexes. For example, in the ... Read More
What are Common Divisors? The common divisors of two numbers are the numbers that are divisors of both. A number is said to divide another number if it leaves no remainder when divided. For example, 3 divides 12 since 12 / 3 = 4 (no remainder). But 5 does not divide 12 because 12 / 5 = 2 with a remainder of 2. Understanding with an Example Let’s take two numbers, 12 and 18. We list all the divisors of both numbers and identify the common ones. ... Read More
In this article, we will explain maximum fruit count to make compote problem and implement a C++ program to solve it. The problem involves finding the maximum number of fruits that can be used to make a compote, given certain constraints. Let's break down the problem statement below. Maximum Fruit Count to Make Compote You are given a list of fruits, say a apples, b bananas, and c cherries, where a, b, and c are the counts of each type of fruit. Your task is to make a compote using these fruits such that the apples, bananas and cherries ... Read More
In C++, floating-point numbers are used to represent decimal values. The most commonly used floating-point types are float and double. These data types differ in their size, precision, and use cases. Understanding how to use and compare them correctly is important for accurate computations. Understanding Float and Double Precision The float is a 32-bit single-precision floating-point type that can store approximately 7 decimal digits, while double is a 64-bit double-precision type that offers about 15 to 16 digits of precision. Due to these differences, double is generally preferred for higher accuracy in scientific and financial calculations. Example: Printing ... Read More
Unique Triplets that Sum up to a Given Value In this article, we will discuss different approaches to find all the unique triplets that sum up to the given value. Before that, first understand the given problem. We have been given an integer array with N elements, along with a target value. Our task is to find unique or distinct triplets (i.e., three numbers) from an array, whose sum is the same as the target value. Let's take a scenario to understand the problem in a better way: Scenario 1 Input: arr ={1, 2, 3, 4, 5, 6, 7} ... Read More