Георги обнови решението на 17.10.2016 13:56 (преди около 8 години)
+def convert_to_celsius(degrees, scale)
+ return degrees if scale == 'C'
+ scale == 'K' ? degrees - 273.15 : (degrees - 32) * (5.0 / 9.0)
+end
+
+def convert_to_fahrenheit(degrees, scale)
+ return degrees if scale == 'F'
+ celsius_temperature = convert_to_celsius(degrees, scale)
+ celsius_temperature * (9.0 / 5.0) + 32
+end
+
+def convert_to_kelvin(degrees, scale)
+ return degrees if scale == 'K'
+ celsius_temperature = convert_to_celsius(degrees, scale)
+ celsius_temperature + 273.15
+end
+
+def convert_between_temperature_units(degrees, from, to)
+ return degrees if from == to
+ return convert_to_celsius(degrees, from) if to == 'C'
+ return convert_to_fahrenheit(degrees, from) if to == 'F'
+ return convert_to_kelvin(degrees, from) if to == 'K'
+end
+
+TEMPERATURES = {
+ 'water' => [0, 100],
+ 'ethanol' => [-114, 78.37],
+ 'gold' => [1064, 2700],
+ 'silver' => [961.8, 2162],
+ 'copper' => [1085, 2567]
+}.freeze
+
+# Rubocop: -Freeze!
+# Me: ...
+
+def melting_point_of_substance(substance, scale)
+ convert_between_temperature_units(TEMPERATURES[substance].first, 'C', scale)
+end
+
+def boiling_point_of_substance(substance, scale)
+ convert_between_temperature_units(TEMPERATURES[substance].last, 'C', scale)
+end