katas Easy / Intermediate ⭐️ Bouncing Balls 6kyu Take a Ten Minute Walk 6kyu You're a Square 7kyu Sum of Numbers 7kyu Sum of Two Lowest Positive Integers 7kyu Count Duplicates 6kyu Remove Anchor from URL 7kyu First Non-Repeating Character 5kyu Only Duplicates 6kyu The Hashtag Generator 5kyu Exes and Ohs 7kyu Your Order Please 6kyu Maximum Multiple 7kyu Maximum Product 7kyu Duplicate Encoder 6kyu Playing with Numbers (Collection) 7kyu - 6kyu Who Likes It? 6kyu Find the Missing Letter 6kyu Mumbling 7kyu Intermediate / Advanced ⭐️⭐️ The Supermarket Queue 6kyu Validate Credit Card Number 6kyu Simple Pig Latin 5kyu Human Readable Time 5kyu Directions Reduction 5kyu Greed is Good 5kyu Delete occurrences of an element if it occurs more than n times 6kyu Weight For Weight 5kyu Sum Consecutives 6kyu Rot13 5kyu Playing with Digits 6kyu Pagination Helper 5kyu Next bigger number with the same digits 4kyu Captain Planet 4kyu Simple String Expansion 6kyu Sums of Parts 6kyu Advanced ⭐️⭐️⭐️ Reverse it, Quickly! 4kyu Persistent Bugger 6kyu String Incrementer 5kyu Gap in Primes 5kyu Write Number in Expanded Form 6kyu Encrypt this 6kyu Next smaller number with the same digits 4kyu Defuse the bombs! 3kyu