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Programming Articles
Page 1686 of 2547
Java Program To Reverse A Number And Check If It Is A Palindrome Number
What is a Palindrome Number? If a number is given (two, three or four-digit number) and reversing each individual number with the positions from front to back and then vice versa , and then if the number output is the same after reversing all the elements then it is said to be a palindrome number. Just like we will check whether the string or array is palindrome number. String - A string is a storing capsule or a storing method in which we can store a sequence of characters in a Java program. Array - An array is a collection ...
Read MoreJava Program for Pigeonhole Sort
In this article, we will learn Pigeonhole Sort in Java, a sorting algorithm designed for arrays with a small range of integer values. It organizes elements into "pigeonholes" based on their values and then reconstructs the sorted array. We’ll discuss two approaches: a basic method using arrays and an optimized approach using LinkedLists. What is Pigeonhole Sort? Pigeonhole Sort works by distributing elements into a range of buckets based on their values. It is most effective when the range of input values is relatively small compared to the size of the dataset. The algorithm ensures stability and simplicity in sorting ...
Read MoreJava Program to Save Decimal
In this article, we will learn two ways to handle decimal values in Java. First, we will use the BigDecimal class to ensure precision when working with decimals. Then, we will use the DecimalFormat class to format decimal values. Both examples will show how to scale decimal values to three places. Different Approaches to Save Decimal Values The following are the two approaches to save decimal values in Java − Using BigDecimal Using DecimalFormat Save Decimal Values Using BigDecimal for Precision Control The BigDecimal class of java.math package is used for ...
Read MoreJava Program to get frequency of words with Lambda Expression
In this article, we will learn how to calculate the frequency of words in a text using Java and Lambda Expressions. By leveraging concise syntax and functional programming techniques, we can efficiently process text data and determine word occurrences. This approach is particularly useful for applications like text analysis and natural language processing. What is Lambda Expression? A lambda expression in Java is a concise way to represent an anonymous function(a function without a name). Introduced in Java 8, it simplifies the implementation of functional interfaces (interfaces with a single abstract method), enabling cleaner and more readable code. Syntax of ...
Read MoreJava Program for Pancake sorting
In this article, we will learn pancake sorting which is a unique way to sort an array by flipping sections of it. The algorithm finds the largest unsorted element, flipping it to the front, and then flipping it to its correct position. Although not the fastest sorting method, it’s an interesting and creative way to learn about problem-solving and data manipulation. This article explains the algorithm in simple steps and shows how to implement it in Java. What is Pancake Sorting? Pancake sorting is a sorting technique that resembles selection sort, i.e. sorting the largest element first thereby reducing the ...
Read MoreFile Handling through C++ Classes
In this tutorial, we will be discussing a program to understand File Handling through C++ classes. What's File Handling? File handling is an important concept in programming, which allows a program to read from and write to files. C++ has built-in classes and functions for file handling, which is done using file stream classes that are part of the library. The most common file stream classes in C++ are ofstream, ifstream, fstream. ofstream: This class is used for output file streams, where it allows the user to write data to files. ...
Read MoreJava Connection setSavepoint() method with example
When working with databases in Java, there are scenarios where you might want to perform complex transactions involving multiple steps. To maintain control and flexibility during such operations, Savepoints come into play. The setSavepoint() method in the java.sql.Connection interface allows you to create a savepoint within a transaction, providing a mechanism to roll back to a specific point if needed. What is Savepoint? A Savepoint is a marker within a database transaction. It enables partial rollbacks, meaning you can undo a subset of changes made during a transaction without affecting the entire operation. This is particularly useful in scenarios where ...
Read MoreHow to prevent class inheritance in C++
Here we will see how to prevent inheritance in C++. The concept of preventing inheritance is known as the final class. In Java or C#, we can use final classes. In C++ there are no such direct ways. Here we will see how to simulate the final class in C++. Approach Firstly, we will create one extra class called MakeFinalClass (its default constructor is private). This function is used to solve our purpose. The main Class MyClass can call the constructor of the MakeFinalClass as they are friend classes. One thing ...
Read MoreCount set bits in an integer in C++
We are given an integer number let’s say, num and the task is to first calculate the binary digit of a number and then calculate the total set bits of a number. Set bits in a binary number are represented by 1. Whenever we calculate the binary number of an integer value then it is formed as the combination of 0’s and 1’s. So, the digit 1 is known as a set bit in terms of the computer. Example 1 Input − int number = 50 Output − The count ...
Read MoreFind All the Subarrays of a Given Array in Java
An array is a linear data structure in which elements are stored in contiguous memory locations. As per problem statement, we have to find all the subarrays of a given array. Subarrays are part or a section of an array. When we talk about all subarrays of an array, we talk about the total number of combinations that can be made using all the elements of the array without repeating. Let’s explore the article to see how it can be done by using Java programming language. To Show you Some Instances Instance-1 Suppose we have the below array [10, ...
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