Leetcode-Swift

Leetcode easy level codes written in Swift 4 with optimisation keeping in mind

Codes

1. TARGET SUM - 396

2. REVERSE NUMBER - 7

3. ROMAN TO INTEGER - 204

4. VALID PARENTHESIS - 20

5. REMOVE DUPLICATE FROM SORTED LIST - 189

6. REMOVE DUPLICATE FROM SORTED LIST - 189 (Swap Index Concept - more optimsied)

7. Haysack and needle problem

8. SQUARE ROOT OF X - 69

9. RETURN NUMBER OF 1'S BITS - 191

10. Reverse Bits - 151

11. COUNT PRIMES - 204

12. REVERSE STRING

13. VALID PALINDROME STRING - 125

14. MISSING NUMBER - 268

15. FIZZBUZZ - 412

16. SUM OT TWO INTEGERS - 371

17. SINGLE NUMBER - 136

18. CONTAINS DUPLICATE - ARRAY - 217

19. DETERMINE IF NUMBER IS POWER OF THREE OR NOT

20. POWER OF TWO OR NOT

21. MERGE SORTED ARRAYS - 88

22. VALID ANAGRAM OR NOT - 242

23. MOVE ZEROES - 283

24. LONGEST COMMON PREFIX - 14

25. PLUS ONE - 66

26. MAJORITY ELEMENT - 169

27. FACTORIAL TRAILING ZEROES - 172

28. MAXIMUM SUBARRAY - 53

Any comments or suggestions are most welcome.