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In this article, we will learn to print the upper star triangle pattern in Java. Printing patterns is a common exercise to strengthen the understanding of loops in programming. One of the most popular patterns is the Upper Star Triangle, which visually resembles an inverted right-angled triangle of stars aligned from the top. Below is a demonstration of the same − Input Enter the number of rows : 8 Output The upper star triangle star pattern : * ... Read More
In this article, we will learn to convert integers to String with Map in Java. The Stream API has become an essential tool for processing collections of data in a more declarative and readable way. Instead of using traditional loops, streams allow developers to filter, map, and perform other operations on data with minimal code Problem Statement Given an integer, we need to convert it to its string representation where the integer is treated as a character (e.g., 5 becomes "5", 10 becomes "10"). We'll use a Map to define the integer-to-string mappings and retrieve the string equivalent for a ... Read More
In Java, Converting a byte array to a hex string means transforming each byte into its hexadecimal representation. byte array: A byte array is a collection of byte values. Each byte is an 8-bit unit of data. Hex String: A hexadecimal (hex) string represents a number in base-16, using digits 0-9 and letters A-F. We represent the A-F in numbers as 10 to 15. The following is our byte array as given below − byte[] b = new byte[]{'p', 'q', 'r'}; We have created a custom method "display" that ... Read More
An array is a linear data structure that stores a group of elements with similar datatypes, in a sequential order. Once we create an array, we can’t change its size, i.e., it can store a fixed number of elements. In this article, we will learn how to write a Java program where we create an array and perform the right rotation using the reversal algorithm. Right Rotation of an Array Let’s understand the term right rotation in the context of an array. In the right rotation of an array, we simply shift the elements of the array to our right till the specified number ... Read More
Problem Description In this problem, we are given a number and have to check whether this number is greater than zero. Using the if-else and ternary approach to check if the given number is greater than zero, equal to zero, or less than zero. In this article, we will discuss how we can find if a given number is greater than zero or not in C++. Prerequisite If-else operator: This operator allows the program to execute certain code blocks based on whether a condition is true or false. Syntax of If-else operator if (condition) { // ... Read More
Building reliable and efficient apps requires selecting an appropriate database management system. With so many choices, it's critical to comprehend how various systems fit particular objectives and use cases. YugabyteDB and Valentina Server are two well-known database systems with different functions. To assist you decide which of these two database options could be a better fit for your project, let's examine the differences and use cases. What is YugabyteDB? YugabyteDB is a globally distributed document storage, cloud-native, high-performance distributed SQL database. Its goal is to make applications more flexible. The main office of Yugabyte is located in Sunnyvale, CA. It ... Read More
In the modern world, communication is essential. There are many different communication tools on the market that allows communication between individuals and within organizations. Slack and Asana are both tools for communication. Slack is mostly used for team coordination, whereas Asana offers a variety of communication options. In simple terms, they are business tools for project management and team member productivity. What is Asana? Asana is a platform that improves project management, helps users concentrate on what matters, and integrates work in a single location for easy collaboration. Dustin Moskovitz and Justin Rosenstein created it in 2008 for the Asana ... Read More
Python offers several powerful libraries to convert PDF documents to plain text, such as PyPDF2 and PDFMiner which are two popular modules for text extraction from PDFs. Some of the common approaches (modules) for converting PDF to text are as follows- Using PyPDF2 Using PDFMiner Using PyMuPDF Using 'PyPDF2' Module PyPDF2 is a versatile library used for manipulating PDF files, focusing on functions such as merging, splitting, rotating pages, and extracting text. It offers a simple approach for performing basic PDF operations. To extract data using ... Read More
Shuffling an array involves rearranging the elements of the array into a random order. For example, if arr = [1, 2, 3, 4, 5], the output might be [5, 3, 2, 1, 4]. Let's explore different ways to shuffle an array in Python. Following are the various methods to shuffle an array in Python − Using shuffle() method Using permutation() method Using simple() method Shuffling using random indices Fisher-Yates shuffle Algorithm Using shuffle() Method The shuffle() method in ... Read More
In this article, lets see try to find the sum of elements in a list. For a given integer list, the program should return the sum of all elements of the list. For an example let's consider list_1 = [1, 2, 3, 4, 5] the output of the program should be 15. Following are the different types of approaches to find the sum of elements in a list − Iterating through loops Using Recursion Using sum() function By ... Read More