Swift Coding Challenges These Swift code challenges cover important concepts for any coding interview. The solutions are all in Swift 3 and Swift 4. Strings No. Challenge 1. Are the letters unique? 2. Is the string a palindrome? 3. Do two strings contain the same characters? 4. Does one String contain another String? 5. How many times does a character appear in a string? 6. Remove duplicate letters from a string. 7. Condensed white space. 8. Is the string rotated? 9. Is the string a pangram? 10. Return a tuple of a string's vowels and consonants. 11. Are two strings identical with no more than a three letter difference? Licensing My Swift Coding Challenges Solutions are licensed under the MIT License. Support or Contact Visit ddApps.co to see more.