Mathematical Computations

Roman to Integer (LeetCode #13)

Integer to Roman (LeetCode #12)

Factorial Trailing Zeroes (LeetCode #172)

Happy Number (LeetCode #202)

Excel Sheet Column Number (LeetCode #171)

Ugly Number (LeetCode #263)

Perfect Number (LeetCode #507)

Palindrome Number (LeetCode #9)

Power of Two (LeetCode #231)

Count Primes (LeetCode #204)

Fizz Buzz (LeetCode #412)

Add Digits (LeetCode #258)

Single Number (LeetCode #136)

Missing Number (LeetCode #268)

Repeated Substring Pattern (LeetCode #459)

Valid Perfect Square (LeetCode #367)

Arranging Coins (LeetCode #441)

Find the Difference (LeetCode #389)

Island Perimeter (LeetCode #463)

Guess Number Higher or Lower (LeetCode #374)

Sqrt(x) (LeetCode #69)

Power(x, n) (LeetCode #50)

Binary Representation of a Number (Custom Problem)

Convert Integer to Binary String (Custom Problem)