01 - "Modified ctof and ftoc methods"
02 - "Renamed variables"
03 - "Renamed variables & more elegant solution"
04 - "Renamed variables & ternary operation"
05 - "Renamed variables"
06 - "Renamed variables"
07 - "If replaced with ternary operator & renamed variables"
08 - "Renamed variables"
09 - "Using attr_reader & renamed variables"
10 - "Using attr_accessor & renamed variables"
11 - "Refactored"
12 - "Refactored"
13 - "Refactored"
14 - "Refactored"