Иван обнови решението на 17.10.2016 15:10 (преди над 8 години)
▸ Покажи разликите+MY_HASH =
+ {
+ 'water' => [0, 100], 'ethanol' => [-114, 78.37],
+ 'gold' => [1064, 2700], 'silver' => [961.8, 2162],
+ 'copper' => [1085, 2567]
+ }.freeze
+
+def convert_between_temperature_units(temp, from, to)
+ if temp.is_a?Numeric
+ if 'C' == from
+ convert_from_celsius(temp, to)
+ elsif 'F' == from
+ convert_from_farenheit(temp, to)
+ elsif 'K' == from
+ convert_from_kelvin(temp, to)
+ end
+ else puts 'Wrong parameters!'
+ end
+end
+
+def convert_from_celsius(temp, to)
+ if 'F' == to
+ temp * 1.8 + 32
+ elsif 'K' == to
+ temp + 273.15
+ elsif 'C' == to
+ temp
+ else
+ puts 'Wrong parameters!'
+ end
+end
+
+def convert_from_kelvin(temp, to)
+ if 'C' == to
+ temp - 273.15
+ elsif 'F' == to
+ (temp * 1.8) - 459.67
+ else
+ puts 'Wrong parameters!'
+ end
+end
+
+def convert_from_farenheit(temp, to)
+ if 'C' == to
+ (temp - 32) / 1.8
+ elsif 'K' == to
+ (temp + 459.67) * 0.5555
+ else
+ puts 'Wrong parameters!'
+ end
+end
+
+def melting_point_of_substance(substance, metric)
+ if !MY_HASH[substance].nil?
+ convert_between_temperature_units(MY_HASH[substance][0], 'C', metric)
+ else puts 'Wrong parameters!'
+ end
+end
+
+def boiling_point_of_substance(substance, metric)
+ if !MY_HASH[substance].nil?
+ convert_between_temperature_units(MY_HASH[substance][1], 'C', metric)
+ else puts 'Wrong parameters!'
+ end
+end
+
+puts convert_between_temperature_units(5, 'C', 'K')
+puts melting_point_of_substance('gold', 'K')
+puts boiling_point_of_substance('gold', 'K')