Add solution for Project Euleur problem 1
Iterative solution to Project Euleur problem 2
Solution to Project Euler problem 3
Solution to Project Euler problem 4
Solution to Project Euler problem 5
Less iterations to solve problem 5
Less iterations to solve problem 5
Solution to Project Euler problem 6
Refactoring problem 4 to reduce number of iterations
Solution to Project Euler problem 7
Solution to Project Euler problem 8