Solution to bit position of Codeeval
https://www.codeeval.com/open_challenges/19/
Solution to lower case of Codeeval
https://www.codeeval.com/open_challenges/20/
Solution to lower case of Codeeval
https://www.codeeval.com/open_challenges/21/
Solution to longest line problem of Codeeval
https://www.codeeval.com/open_challenges/2/