Introduction Counting the number of occurrences of a substring within a string is a common task in text processing. This exercise helps you understand how to work with strings and use methods in Java to search for substrings. This guide will walk you through writing a Java program that counts the number of times a …
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Introduction Counting the number of duplicate words in a string is a useful task in text processing, often needed for analyzing text or preparing data for natural language processing. This exercise helps you understand how to split strings into words, use data structures like maps in Java, and identify duplicates efficiently. This guide will walk …
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Introduction Counting the number of vowels and consonants in a string is a common task in text processing. This exercise helps you understand string manipulation and the use of loops and conditionals in Java. This guide will walk you through writing a Java program that counts the number of vowels and consonants in a given …
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Introduction Counting the occurrences of words 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 occurrences. This guide will walk you through writing a Java program that counts the occurrences of each word …
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Introduction Finding all the permutations of a string is a common problem in computer science, especially in the fields of algorithm design and combinatorics. A permutation of a string is a rearrangement of its characters into different sequences. This guide will walk you through writing a Java program that generates all possible permutations of a …
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Introduction Finding duplicate words in a string is a useful task in text processing, often needed for analyzing text or preparing data for natural language processing. This exercise helps you understand how to split strings into words, use data structures like maps in Java, and identify duplicates efficiently. This guide will walk you through writing …
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Introduction Finding duplicate characters in a string is a common task in text processing. It helps you understand how to manipulate strings and use data structures like maps in Java. This guide will walk you through writing a Java program that identifies and counts the duplicate characters in a given string. Problem Statement Create a …
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Introduction Finding the first non-repeated character in a string is a common problem in text processing and interviews. It helps you understand string manipulation, data structures like maps, and the importance of efficient algorithms in Java. This guide will walk you through writing a Java program that finds the first non-repeated character in a given …
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Introduction Counting the number of vowels in a string is a common task in text processing. In Java, this exercise helps you understand how to manipulate strings and use loops or regular expressions. This guide will walk you through writing a Java program that counts the number of vowels in a given string. Problem Statement …
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Introduction Prime numbers are natural numbers greater than 1 that have no divisors other than 1 and themselves. Finding prime numbers within a specific range is a common problem in programming. This guide will show you how to create a Java program that finds all prime numbers within a specified range. Problem Statement Create a …
Introduction A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself. In other words, a prime number is a number that cannot be formed by multiplying two smaller natural numbers. This guide will show you how to create a Java program that finds prime numbers …
Introduction An Armstrong number (also known as a narcissistic number) is a number that is equal to the sum of its own digits each raised to the power of the number of digits. For example, 153 is an Armstrong number because (1^3 + 5^3 + 3^3 = 153). This guide will show you how to …
Introduction A palindrome is a string that reads the same forward and backward. For example, "madam" and "racecar" are palindromes. This guide will show you how to create a Java program that checks whether a given string is a palindrome. Problem Statement Create a Java program that: Takes a string as input. Checks if the …
Introduction Reversing a number involves rearranging its digits in the opposite order. This is a common task in programming, often used in algorithms, data processing, and more. This guide will show you how to create a Java program that reverses a given number using different approaches. Problem Statement Create a Java program that: Takes an …
Introduction Reversing a string is a common task in programming, often used in scenarios such as data manipulation, palindrome checking, and more. This guide will show you how to create a Java program that reverses a given string using different approaches. Problem Statement Create a Java program that: Takes a string as input. Reverses the …
Introduction Java 8 introduced the Stream API, which allows for powerful data processing operations on collections in a functional style. One common requirement in many applications is finding the second-highest salary among employees in an organization. This task involves sorting the salaries and then identifying the second-highest value. The Stream API, combined with methods like …
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Introduction Java 8 introduced several features that make it easier to work with collections of data, such as streams and lambda expressions. In a typical application, you might need to calculate an employee’s salary based on various components such as base salary, bonuses, deductions, and other factors. This guide will show how to use Java …
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Introduction Java 8 introduced the Stream API, which provides a powerful way to process collections of data in a functional style. A common requirement in data processing is to find the maximum value in a collection, such as identifying the employee with the highest salary in an organization. The Stream API, combined with methods like …
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Introduction Java 8 introduced the Stream API, which provides a powerful and concise way to process collections of data. A common requirement in data analysis is to calculate the total and average salary of all employees in an organization. The Stream API, along with the Collectors utility, makes these calculations straightforward and efficient. In this …
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Introduction In Java 8, the Stream API provides used for processing collections of data in a functional style. One common requirement in data analysis is calculating the average salary of employees within each department in an organization. The Stream API, in combination with Collectors.groupingBy and Collectors.averagingDouble, makes this calculation straightforward and efficient. In this guide, …
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Introduction Java 8 introduced the Stream API, which offers a powerful and functional way to process collections of data. A common task in data analysis is to calculate the average value of a certain field, such as the average salary in different departments within an organization. The Stream API, combined with Collectors.groupingBy and Collectors.averagingDouble, makes …
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Introduction Java 8 introduced the Stream API, which provides a powerful and concise way to process collections of data. A common task in data processing is identifying the group with the maximum count, such as finding the department with the highest number of employees. The Stream API, combined with Collectors.groupingBy and Collectors.counting, makes this task …
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Introduction Java 8 introduced the Stream API, which provides a powerful and expressive way to process collections of data. One common task in data processing is counting the number of elements in specific groups. For instance, in an organization, you may want to count the number of employees in each department. The Stream API, combined …
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Introduction Java 8 introduced the Stream API, which provides a powerful and expressive way to process collections of data. One common task in data processing is calculating the average value of a particular field within different groups. For instance, in an organization, you may want to calculate the average age of male and female employees …
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Introduction Java 8 introduced the Stream API, which provides a powerful and functional way to process collections of data. One common operation is finding the maximum value based on a particular field in a collection of objects. For instance, you might need to find the maximum age of employees in an organization. The Stream API …