String Methods Part 2

Part of the Fundamentals section of Coddy's C# journey — lesson 62 of 69.

Use string.Join() to combine array elements into a single string.

Example:

string[] words = { "Hello", "World", "C#" };
string result = string.Join(" ", words);
Console.WriteLine(result);
// Output: Hello World C#

Use .Split() to divide a string into substrings based on a delimiter.

Example:

string text = "apple banana cherry";
string[] fruits = text.Split(' ');
Console.WriteLine(string.Join(", ", fruits));
// Output: apple, banana, cherry

Challenge

Easy

Write a program that takes two inputs: a text string and a delimiter character. The program should replace all single spaces (" ") in the text with the specified delimiter and print the modified string.

Try it yourself

using System;

class Program {
    public static void Main(String[] args) {
        // Write code here
    }
}

Test yourself

This lesson includes a short quiz. Start the lesson to answer it and track your progress.

All lessons in Fundamentals

1Introduction

C#Hello World!Comments Basic Program Structure

4Operators Part 1

Arithmetic Operators Modulo Operator Increment/Decrement Post Increment/Decrement Arithmetic Shortcuts

7Basic IO

Basic Output String Interpolation Reading Input Parse Recap - Till 120 Recap - True or False

10Methods (Functions)

Declaring Methods Method Parameters Return Types Optional Parameters Recap - Validation Function Void Methods

13Iterating Over Collections

Using For Loop Foreach Loop Common Array Operations

2Variables Part 1

Numbers Char String Boolean Type Declaration

5Operators Part 2

Comparison Operators Logical Operators Part 1 Logical Operators Part 2 Recap - Simple Logic Logical Operators Part 3

8Calculator App

Welcome Message Getting Numbers

Basic Operations

Formatted Output

11Arrays Basics

Declaring Arrays Accessing Elements Modifying Arrays Array Methods Recap - Product Array Edit Recap - Reversed Array

14Final Challenges

Number Pattern Pattern Finder Student Grade Calculator

3Variables Part 2

Var Constants Naming Conventions Recap - Initialize Variables Type Casting

6Decision Making

If Statement If - Else Switch Statement Ternary Operator Recap - If Else Nested If - Else

9Loops

For Loop While Loop Do While Loop Break Continue Nested Loop Infinite Loop Recap - Dynamic Input

12String Operations

String Methods Part 1String Methods Part 2String Formatting