Ruby Character Counter Challenge — PickAClass
⏱ 2h 48m 📚 28 lessons 🎧 Audio version

Ruby Character Counter Challenge

Master fundamental Ruby concepts by building a program that processes user input, counts characters, and applies validation rules.

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About this course

Many practical programming tasks involve interacting with users and processing their input. This course guides you through building a Ruby program that counts characters from user input, introducing fundamental concepts like data validation and iterative control flows. By the end of this course, you will have gained practical experience in handling user interaction, structuring simple applications, and ensuring data quality in your Ruby code. What you'll learn: * Understand core Ruby syntax and basic data types. * Process user input and manipulate string values effectively. * Implement control flow using loops for repetitive tasks. * Apply input validation techniques to ensure robust program behavior. * Design and structure small Ruby programs with clear logic. * Learn foundational principles of unit testing to verify code correctness. This course begins with Ruby essentials, then progresses to handling user input, implementing loops, and adding validation, concluding with an introduction to testing your solution. This course is designed for absolute beginners with no prior programming experience. Start your journey into Ruby programming and build your first interactive application.

Course contents

What you'll get

  • 📜 Certificate of completion
    Add it to your LinkedIn profile
  • 💬 Personal AI tutor
    Stuck on a lesson? Ask your built-in tutor anything, any time.
  • 🎧 Audio version included
    Learn on the go — no screen needed
  • ♾️ Lifetime access
    Come back anytime, no expiry
  • 📱 Phone or computer
    Works anywhere, any device
  • 💸 14-day refund
    No questions asked
  • ⚡ Short & focused
    2h 48m of practical content

Certificate of completion

Every course you complete on PickAClass issues a credential like this — original, with its own code, verifiable by URL, and detailed about what was actually demonstrated.

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PickAClass
Skills profile · verifiable
Document
Certificate of Mastery
This certifies that
Name Surname
has successfully demonstrated mastery of
Ruby Character Counter Challenge
Skills demonstrated
✓
Behavioral pattern analysis
Foundational
1.2 hrs
✓
Decision-architecture frameworks
Proficient
1.4 hrs
✓
A/B test design
Proficient
1.7 hrs
✓
Behavioral copywriting
Advanced
1.9 hrs
P
PickAClass — Name Surname
Ruby Character Counter Challenge
Page 2 of 2
Performance detail
Coursework summary
Lessons completed 14 / 14
Practice questions 26 / 28
Assignments submitted 4 (avg 4.5 / 5)
Capstone project Reviewed — 4.6 / 5
Total practice 6.2 hrs
Performance benchmark
Cohort rank Top 12% of 1,625
Time to completion 11 days (median: 22)
Mastery score 91 / 100
Practice-question score 94%
Skill verification Verified Skill Path
Verify this credential
pickaclass.com/certificates/PCC-2026-X4F7-AP19
Issued under the academic standards of PickAClass. Skill levels reflect assessed performance against the course's competency rubric. This is an original credential of this platform.

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Frequently asked

What do I need to take this course? +

Just a phone or computer with internet. No installs, no special hardware.

How do I pay? +

By card via Stripe. We don’t store card details — Stripe handles them securely.

Can I get a refund? +

Yes — full refund within 14 days, no questions asked.

How long will I have access? +

Forever. Once you purchase, the course is yours to revisit anytime.

Will I get a certificate? +

Yes. On completion you'll receive a certificate you can add to your LinkedIn profile.

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