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Programming Articles
Page 1653 of 2547
How to implement custom JSON de-serialization with Gson in Java?
Deserialization is the process of converting JSON data back into Java objects. Gson provides a simple way to do this using the fromJson() method. Custom JSON de-serialization with Gson Gson is a Java library developed by Google to convert Java objects into their JSON format and vice versa. Custom JSON is a way we can modify or extend the standard JSON format so that it can suit our specific needs. To use the Gson library, we need to add the Gson library to our project. If you are using Maven, add this to your pom.xml file: com.google.code.gson gson 2.8.9 ...
Read MoreJava Stream findAny() Method with Examples
In this article, we will learn the findAny() method with examples in Java. The findAny() method in Java Streams is a tool that is used for fetching an arbitrary element from a stream. It provides a quick and easy way to retrieve any element without writing any conditions. This method returns a container that may or may not contain a non-null value, which is called an Optional object. What is the findAny() Method? The findAny() method retrieves any element from the stream, and the result is wrapped in an Optional object. If the stream is empty, the Optional object will ...
Read MoreC++ Program to Make a Simple Calculator to Add, Subtract, Multiply or Divide Using switch...case
In this article, we'll show you how to write a C++ program to create a simple calculator that can add, subtract, multiply, or divide using a switch statement. The calculator works by taking two numbers(operands) and an operator (+, -, *, /) from the user, and then it performs the chosen operation. Lets understand it better with an example: Suppose the user enters: a = 5 and b = 4 Then, based on the chosen operator: If the operator is +, the result is 5 + 4 = 9 If the operator is -, the result is 5 ...
Read MoreC++ Program to Implement Prev_Permutataion in STL
The Prev permutation is an algorithmic operation that rearranges the elements of an array or a range of an array into the previous lexicographically smaller permutation. In this article, we will learn how to use the prev_permutation() function from the Standard Template Library (STL) in C++. What is Prev Permutation? The Prev Permutation is an operation used to generate all the possible permutations of an array in reverse lexicographical order. A permutation is one of the N! arrangements of the elements in an array of size N. The STL library of C++ provide a pre-defined function for performing the ...
Read MoreC++ Program to Convert Binary Number to Decimal and vice-versa
In this article, we will learn how to convert a binary number to a decimal number and a decimal number to a binary number using C++. This means converting numbers like 5 or 10 into a format that uses only 0s and 1s, and also converting binary numbers back into decimal. Decimal number system has a base of 10 as it uses 10 digits from 0 to 9, while binary has a base of 2 as it uses only 0 and 1. Binary is used in computers because digital devices can only represent two states: on(1) and off(0). Example ...
Read MoreC++ Program to Find Factorial
In this article, we'll show you how to write a C++ program to find the factorial of a number. The factorial of a number is the result of multiplying all the positive integers from 1 to that number. It is written as n! and is commonly used in mathematics and programming. Let's understand this with a few examples: //Example 1 Input: 5 The factorial of 5 is: 5 * 4 * 3 * 2 * 1 = 120 Output: 120 //Example 2 Input: 6 The factorial of 6 is: 6 * 5 * 4 * 3 * 2 ...
Read MoreC++ Program to Find LCM
In this article, we'll show you how to find the LCM of two numbers in a C++ program. The LCM(Least Common Multiple) is the smallest positive number that is exactly divisible by both numbers. For example, if we take 4 and 5: The multiples of 4 are: 4, 8, 12, 16, 20, 24, ... The multiples of 5 are: 5, 10, 15, 20, 25, ... The first common multiple is 20, so the LCM of 4 and 5 is 20. Approaches to Find LCM in C++ We can find the LCM of two ...
Read MoreC++ Program to Add Two Numbers
In this article, we'll show how to add two numbers using C++ and display the result. Adding two numbers is a basic arithmetic operation, meaning we combine their values to get a total. We will see different methods to solve this. Different Ways to Add Two Numbers in C++ In C++, there are various approaches to add two numbers, each approach using its own cases and advantages. Below are the mentioned list: Using Addition Operator Using User Input Using Increment and Decrement Operators ...
Read MoreHow to eliminate repeated lines in a python function?
In this article, we will discuss how to delete multiple lines that are repeated in a Python Function. If the file containing the program is small and only has a few lines, we can remove repeated lines manually. However, when dealing with huge files, we need a Python program to do so. Using the File Handling Methods Python has built-in methods for creating, opening, and closing files, which makes handling files easier. Using the methods, we can also perform several file actions, such as reading, writing, and appending data (while files are open). To remove duplicate lines from a text ...
Read MoreC++ Program to Calculate Power of a Number
In this article, we'll show you how to calculate the power of a number in C++. Calculating a power means multiplying the base by itself as many times as the exponent indicates. For example, 2 raised to the power of 3 (2^3) means multiplying 2 by itself three times: 2 * 2 * 2, which gives 8. In C++, there are different ways to calculate the power of a number. Below are the approaches we cover: Using a Loop Using Recursion Using the pow() Function ...
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