Introduction Finding the largest of three numbers is a common programming task that helps you understand conditional statements and comparisons. This guide will walk you through writing a Java program that determines the largest of three given numbers. Problem Statement Create a Java program that: Prompts the user to enter three integers. Compares the three …
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Introduction Swapping two numbers is a common task in programming. While it’s often done using a temporary variable, it’s also possible to swap two numbers without using any extra space. This can be accomplished using arithmetic operations or bitwise XOR. This guide will walk you through writing a Java program that swaps two numbers without …
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Introduction Prime numbers are natural numbers greater than 1 that have no positive divisors other than 1 and themselves. Printing prime numbers within a specific range is a common exercise in programming that helps you understand loops and conditional statements. This guide will walk you through writing a Java program that prints all prime numbers …
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Introduction Counting the number of digits in a number is a basic yet important task in programming, especially when dealing with numerical data processing. This guide will walk you through writing a Java program that counts the number of digits in a given integer. Problem Statement Create a Java program that: Prompts the user to …
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Introduction The sum of natural numbers up to a given number ( n ) is a common mathematical problem. Natural numbers are positive integers starting from 1. The sum of the first ( n ) natural numbers can be calculated using either a loop or the formula ( \text{Sum} = \frac{n \times (n + 1)}{2} …
Introduction Finding the sum of the digits of a number is a common programming task, especially useful in problems related to number theory and mathematics. This task involves breaking down a number into its individual digits and summing them up. This guide will walk you through writing a Java program that calculates the sum of …
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Introduction A leap year is a year that is divisible by 4 but not divisible by 100, except if it is also divisible by 400. This ensures that the calendar year stays in sync with the astronomical year. Leap years have 366 days instead of the usual 365, with an extra day in February. This …
Introduction Determining whether a number is even or odd is a fundamental programming task. An even number is divisible by 2 without a remainder, while an odd number has a remainder of 1 when divided by 2. This guide will walk you through writing a Java program that checks if a given number is even …
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Introduction Calculating the power of a number is a common task in mathematics and programming. In this context, raising a base number to an exponent means multiplying the base by itself as many times as indicated by the exponent. This guide will walk you through writing a Java program that calculates the power of a …
Introduction The Least Common Multiple (LCM) of two numbers is the smallest positive integer that is divisible by both numbers. The LCM is often used in problems related to fractions, scheduling, and number theory. This guide will walk you through writing a Java program that calculates the LCM of two given numbers. Problem Statement Create …
Introduction The Least Common Multiple (LCM) of two numbers is the smallest positive integer that is divisible by both numbers. The LCM is often used in problems related to fractions, scheduling, and number theory. This guide will walk you through writing a Java program that calculates the LCM of two given numbers. Problem Statement Create …
Introduction The Greatest Common Divisor (GCD) of two numbers is the largest positive integer that divides both numbers without leaving a remainder. The GCD is also known as the greatest common factor (GCF) or the highest common divisor (HCD). This guide will walk you through writing a Java program that calculates the GCD of two …
Introduction The Fibonacci series is a sequence of numbers where each number is the sum of the two preceding ones, typically starting with 0 and 1. The series begins as follows: 0, 1, 1, 2, 3, 5, 8, 13, and so on. The Fibonacci series has numerous applications in computer science, mathematics, and finance. This …
Introduction A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself. Checking if a number is prime is a common task in programming, especially in algorithms related to number theory. This guide will walk you through writing a Java program that checks if a given …
Introduction Removing all whitespace from a string is a common task in text processing. This task helps you practice string manipulation in Java. This guide will walk you through writing a Java program that removes all spaces, tabs, and other whitespace characters from a given string. Problem Statement Create a Java program that: Prompts the …
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Introduction Finding the longest word in a string is a useful task in text processing. This task helps you practice string manipulation, splitting strings into words, and comparing lengths of words. This guide will walk you through writing a Java program that identifies the longest word in a given string. Problem Statement Create a Java …
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Introduction Converting a string to lowercase is a common operation in text processing. This task helps you understand how to manipulate strings using built-in methods in Java. This guide will walk you through writing a Java program that converts a given string to lowercase. Problem Statement Create a Java program that: Prompts the user to …
Introduction Converting a string to uppercase is a basic operation in text processing. This task helps you understand how to manipulate strings using built-in methods in Java. This guide will walk you through writing a Java program that converts a given string to uppercase. Problem Statement Create a Java program that: Prompts the user to …
Introduction Counting the occurrences of each character in a string is a common task in text processing. Using a HashMap allows you to efficiently store and update the frequency of characters. This guide will walk you through writing a Java program that counts the occurrences of each character in a given string using a HashMap. …
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Introduction Finding the maximum occurring character in a string is a common problem in text processing. This task helps you understand how to count the frequency of characters and determine which character appears the most. This guide will walk you through writing a Java program that identifies the character with the highest frequency in a …
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Introduction Swapping two strings is a common exercise to understand how variables work in programming. This task helps you to practice basic operations like assignment and the use of temporary variables in Java. This guide will walk you through writing a Java program that swaps the values of two strings. Problem Statement Create a Java …
Introduction Reversing each word in a string is a common task in text processing. This exercise helps you understand how to manipulate strings, split and reassemble them, and use loops to reverse the characters in each word. This guide will walk you through writing a Java program that reverses each word in a given string …
Introduction Removing duplicate words from a string is a common task in text processing, especially when cleaning up or normalizing text data. This exercise helps you understand how to split strings, use sets to filter out duplicates, and reassemble the string in Java. This guide will walk you through writing a Java program that removes …
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Introduction Merging two string arrays is a common task in programming, especially when dealing with collections of data. This exercise helps you understand how to work with arrays and concatenate their elements into a single array in Java. This guide will walk you through writing a Java program that merges two string arrays into one. …
Introduction Counting the occurrences of each character in a string is a common task in text processing. This exercise helps you understand how to manipulate strings and use data structures like maps in Java to store and count character occurrences. This guide will walk you through writing a Java program that counts the occurrences of …
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