Програмиране с Ruby

Курс във Факултета по Математика и Информатика към СУ

Решение на Шеста задача от Виктория Христова

Обратно към всички решения

Към профила на Виктория Христова

Резултати

  • 6 точки от тестове
  • 0 бонус точки
  • 6 точки общо
  • 47 успешни тест(а)
  • 0 неуспешни тест(а)

Код

require 'bigdecimal'
require 'bigdecimal/util'
class ExchangeRate
attr_accessor :rates
def initialize()
@rates = {}
end
class Unknown < RuntimeError
end
def set(from_currency, to_currency, rate)
unless from_currency == to_currency
rates[[from_currency, to_currency]] = rate
rates[[to_currency, from_currency]] = (1.0/rate).to_d
end
end
def get(from_currency, to_currency)
from_currency == to_currency ? '1'.to_d : rates[[from_currency, to_currency]]
end
def convert(from_currency, to_currency, amount)
raise Unknown unless get(from_currency, to_currency)
from_currency == to_currency ? amount : amount * rates[[from_currency, to_currency]]
end
end
class Money
include Comparable
attr_accessor :amount, :currency
def initialize(amount, currency)
@amount = amount
@currency = currency
end
class IncompatibleCurrencies < RuntimeError
end
def to_s
amount.truncate(2).to_s('F').gsub(/(\.\d)\b/, '\10') + ' ' + currency.to_s
end
def in(to_currency, exchange_rate)
raise ExchangeRate::Unknown unless exchange_rate.get(currency, to_currency)
Money.new(exchange_rate.convert(currency, to_currency, amount), to_currency)
end
def is_same_currency?(money)
raise ArgumentError unless money.class == Money
raise IncompatibleCurrencies unless currency == money.currency
end
def <=>(money)
is_same_currency?(money)
amount <=> money.amount
end
def ==(money)
is_same_currency?(money)
amount == money.amount
end
def +(money)
is_same_currency?(money)
Money.new amount + money.amount, currency
end
def -(money)
is_same_currency?(money)
Money.new amount - money.amount, currency
end
def *(number)
raise ArgumentError unless number.kind_of? Numeric
Money.new number * amount, currency
end
def /(number)
raise ArgumentError unless number.kind_of? Numeric
Money.new amount / number, currency
end
end

Лог от изпълнението

...............................................

Finished in 0.05843 seconds
47 examples, 0 failures

История (3 версии и 0 коментара)

Виктория обнови решението на 15.01.2013 18:16 (преди около 12 години)

+require 'bigdecimal'
+require 'bigdecimal/util'
+
+class ExchangeRate
+ attr_accessor :rates #hash
+
+ def initialize()
+ @rates = {}
+ end
+
+class Unknown < RuntimeError
+end
+
+ def set(from_currency, to_currency, rate)
+ unless from_currency == to_currency
+ rates[[from_currency, to_currency]] = rate
+ rates[[to_currency, from_currency]] = (1.0/rate).to_d
+ end
+ end
+
+ def get(from_currency, to_currency)
+ from_currency == to_currency ? '1'.to_d : rates[[from_currency, to_currency]]
+ end
+
+ def convert(from_currency, to_currency, amount)
+ raise Unknown if rates[[from_currency, to_currency]] == nil
+ from_currency == to_currency ? amount : amount * rates[[from_currency, to_currency]]
+ end
+end
+
+class Money
+ include Comparable
+
+ attr_accessor :amount, :currency
+
+ def initialize(amount, currency)
+ @amount = amount
+ @currency = currency
+ end
+
+ class IncompatibleCurrencies < RuntimeError
+ end
+
+ def to_s
+ amount.truncate(2).to_s('F') + ' ' + currency.to_s
+ end
+
+ def in(to_currency, exchange_rate)
+ raise ExchangeRate::Unknown unless exchange_rate.get(currency, to_currency)
+ Money.new(exchange_rate.convert(currency, to_currency, amount), to_currency)
+ end
+
+ def is_same_currency?(money)
+ raise ArgumentError unless money.class == Money
+ raise IncompatibleCurrencies unless currency == money.currency
+ end
+
+ def <=>(money)
+ is_same_currency?(money)
+ amount <=> money.amount
+ end
+
+ def +(money)
+ is_same_currency?(money)
+ Money.new amount + money.amount, currency
+ end
+
+ def -(money)
+ is_same_currency?(money)
+ Money.new amount - money.amount, currency
+ end
+
+ def *(number)
+ raise ArgumentError unless number.kind_of? Numeric
+ Money.new number * amount, currency
+ end
+
+ def /(number)
+ raise ArgumentError unless number.kind_of? Numeric
+ Money.new amount / number, currency
+ end
+end

Виктория обнови решението на 16.01.2013 12:37 (преди около 12 години)

require 'bigdecimal'
require 'bigdecimal/util'
class ExchangeRate
attr_accessor :rates #hash
def initialize()
@rates = {}
end
class Unknown < RuntimeError
end
def set(from_currency, to_currency, rate)
unless from_currency == to_currency
rates[[from_currency, to_currency]] = rate
rates[[to_currency, from_currency]] = (1.0/rate).to_d
end
end
def get(from_currency, to_currency)
from_currency == to_currency ? '1'.to_d : rates[[from_currency, to_currency]]
end
def convert(from_currency, to_currency, amount)
raise Unknown if rates[[from_currency, to_currency]] == nil
from_currency == to_currency ? amount : amount * rates[[from_currency, to_currency]]
end
end
class Money
include Comparable
attr_accessor :amount, :currency
def initialize(amount, currency)
@amount = amount
@currency = currency
end
class IncompatibleCurrencies < RuntimeError
end
def to_s
- amount.truncate(2).to_s('F') + ' ' + currency.to_s
+ amount.truncate(2).to_s('F').gsub(/(\.\d)\b/, '\10') + ' ' + currency.to_s
end
def in(to_currency, exchange_rate)
raise ExchangeRate::Unknown unless exchange_rate.get(currency, to_currency)
Money.new(exchange_rate.convert(currency, to_currency, amount), to_currency)
end
def is_same_currency?(money)
raise ArgumentError unless money.class == Money
raise IncompatibleCurrencies unless currency == money.currency
end
def <=>(money)
is_same_currency?(money)
amount <=> money.amount
+ end
+
+ def ==(money)
+ is_same_currency?(money)
+ amount == money.amount
end
def +(money)
is_same_currency?(money)
Money.new amount + money.amount, currency
end
def -(money)
is_same_currency?(money)
Money.new amount - money.amount, currency
end
def *(number)
raise ArgumentError unless number.kind_of? Numeric
Money.new number * amount, currency
end
def /(number)
raise ArgumentError unless number.kind_of? Numeric
Money.new amount / number, currency
end
end

Виктория обнови решението на 16.01.2013 15:48 (преди около 12 години)

require 'bigdecimal'
require 'bigdecimal/util'
class ExchangeRate
- attr_accessor :rates #hash
+ attr_accessor :rates
def initialize()
@rates = {}
end
class Unknown < RuntimeError
end
def set(from_currency, to_currency, rate)
unless from_currency == to_currency
rates[[from_currency, to_currency]] = rate
rates[[to_currency, from_currency]] = (1.0/rate).to_d
end
end
def get(from_currency, to_currency)
from_currency == to_currency ? '1'.to_d : rates[[from_currency, to_currency]]
end
def convert(from_currency, to_currency, amount)
- raise Unknown if rates[[from_currency, to_currency]] == nil
+ raise Unknown unless get(from_currency, to_currency)
from_currency == to_currency ? amount : amount * rates[[from_currency, to_currency]]
end
end
class Money
include Comparable
attr_accessor :amount, :currency
def initialize(amount, currency)
@amount = amount
@currency = currency
end
class IncompatibleCurrencies < RuntimeError
end
def to_s
amount.truncate(2).to_s('F').gsub(/(\.\d)\b/, '\10') + ' ' + currency.to_s
end
def in(to_currency, exchange_rate)
raise ExchangeRate::Unknown unless exchange_rate.get(currency, to_currency)
Money.new(exchange_rate.convert(currency, to_currency, amount), to_currency)
end
def is_same_currency?(money)
raise ArgumentError unless money.class == Money
raise IncompatibleCurrencies unless currency == money.currency
end
def <=>(money)
is_same_currency?(money)
amount <=> money.amount
end
def ==(money)
is_same_currency?(money)
amount == money.amount
end
def +(money)
is_same_currency?(money)
Money.new amount + money.amount, currency
end
def -(money)
is_same_currency?(money)
Money.new amount - money.amount, currency
end
def *(number)
raise ArgumentError unless number.kind_of? Numeric
Money.new number * amount, currency
end
def /(number)
raise ArgumentError unless number.kind_of? Numeric
Money.new amount / number, currency
end
end