1. Hello, World!
1. Hello, World!
2. Rename Photos by Capture Date
3. Organize Downloads Folder by File Type
4. Delete Old Log Files Automatically
5. Find Duplicate Files Using MD5 Hashing
6. Generate Comprehensive File Inventory
7. Parse Web Server Logs for Performance Metrics
8. Extract Emails, URLs, and Phone Numbers from Text
9. Track Daily and Monthly Active Users from Apache Logs
10. Generate Formatted Text Reports with Column Alignment
11. Analyze Sales Transactions and Generate Revenue Reports
12. Clean and Validate CSV Data
13. Convert JSON API Responses to CSV
14. Parse and Validate Configuration Files
15. Build a CLI Calculator with Argument Parsing
16. Parse and Display Weather Data from JSON
17. Build a Simple Inventory System with Classes
18. Generate Markdown Table from CSV Data
19. Aggregate Sales Data by Time Period
20. Recursive Directory Size Calculator with Filtering
21. Parse and Transform XML Configuration Files
22. Find and Replace Across Multiple Files
23. Build a Simple Template Engine
24. CSV Data Validator with Business Rules
25. Build a Multi-Format Log Analyzer

Challenge

Problem

Welcome to CrackedRuby! This is your first drill to get familiar with the platform. You'll write a simple Ruby method that returns a greeting message.

Difficulty: Beginner

Instructions

  1. Complete the greet method in main.rb
  2. The method should accept a name parameter
  3. Return 'Hello, [name]!' (with the name capitalized)
  4. If no name is provided, return 'Hello, World!'
  5. Click 'Run Code' to test your solution
  6. Click 'Submit' when all tests pass

Files

Editable

Hints

Hint 1

Use the `capitalize` method to ensure the first letter is uppercase and the rest lowercase

Hint 2

Remember to check if name is `nil` before processing it

Hint 3

String concatenation with + or string interpolation with both work

Hint 4

The default parameter syntax is `name = nil` in the method signature

1. No name provided - returns 'Hello, World!'

Input: 
puts greet
Expected Output: 
Hello, World!

2. Name provided - returns greeting with capitalized name

Input: 
puts greet('alice')
Expected Output: 
Hello, Alice!

3. Mixed case name gets properly capitalized

Input: 
puts greet('rUBy')
Expected Output: 
Hello, Ruby!

4. All caps name gets properly capitalized

Input: 
puts greet('CHARLIE')
Expected Output: 
Hello, Charlie!
+ 1 hidden test case