C# Program to Find the Longest Word in a String

In this article, we’ll learn how to write a C# program to find the longest word in a string. We’ll break down the problem, provide multiple code examples, and explain each step.

Table of Contents

1 Problem Statement
2 Approach
- 2.1 Code Example 1: Find the Longest Word in a String Using Split and Loop
- 2.2 Code Example 2: Find the Longest Word in a String Using LINQ
3 Code Explanation
- 3.1 Related

Problem Statement

We want to find the longest word within an input string.

Word: A word is defined as a sequence of characters separated by spaces.

Approach

We’ll follow these steps to solve the problem:

Split the String: We’ll split the input string into individual words based on spaces.
Track the Longest Word: We’ll keep track of the longest word encountered so far.
Iterate Through Words: We’ll loop through each word in the array of words.
Compare Lengths: For each word, we’ll compare its length with the longest word found so far. If the current word is longer, we’ll update our longest word.
Display the Result: Finally, we’ll display the longest word.

Code Example 1: Find the Longest Word in a String Using Split and Loop

using System;

public class FindLongestWord
{
    public static void Main()
    {
     string input = "Sample string with multiple words";

        // Split the string into words based on spaces
        string[] words = input.Split(' ');

        string longestWord = string.Empty; // Initialize an empty string to store the longest word

        foreach (string word in words)
        {
            if (word.Length > longestWord.Length)
            {
                longestWord = word; // Update the longest word
            }
        }

        Console.WriteLine($"The longest word is: {longestWord}");
    }
}

Output:

The longest word is: multiple

Code Example 2: Find the Longest Word in a String Using LINQ

using System;
using System.Linq;

public class FindLongestWord
{
    public static void Main()
    {
        string input = "Sample string with multiple words";

        // Split the string into words based on spaces
        string[] words = input.Split();

        // Find the longest word using LINQ
        string longestWord = words.OrderByDescending(w => w.Length).FirstOrDefault();

        Console.WriteLine($"The longest word is: {longestWord}");
    }
}

Output:

The longest word is: multiple

Code Explanation

In both examples, we split the input string into an array of words using Split.
We then iterate through the words, comparing their lengths to find the longest word.
Example 1 uses a loop, while Example 2 leverages LINQ for a more straightforward solution.

Remember, understanding the problem and breaking it down step by step is crucial in software development. Happy coding!

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Shekh Ali

Meet Sheikh Ali, a skilled Software engineer and passionate a blogger. He enjoys sharing his expertise in C#, Java, SQL, Design Patterns, and other related topics through his writing. When he's not coding, Sheikh Ali can often indulge in his passions for reading books and fitness training.

Problem Statement

Approach

Code Example 1: Find the Longest Word in a String Using Split and Loop

Code Example 2: Find the Longest Word in a String Using LINQ

Code Explanation

Related