Ангел обнови решението на 12.10.2015 13:38 (преди около 10 години)
+def convert_to_bgn(price, currency)
+    if currency == :usd
+        (price * 1.7408).round(2)
+    elsif currency == :eur
+        (price * 1.9557).round(2)
+    elsif currency == :gbp
+        (price * 2.6415).round(2)
+    else
+        price.round(2)
+    end
+end
+
+def compare_prices(first_price, first_currency, second_price, second_currency)
+    first_bgn = convert_to_bgn(first_price, first_currency)
+    second_bgn = convert_to_bgn(second_price, second_currency)
+    first_bgn <=> second_bgn
+end
