public static decimal price(string items)
{
char[] itemsArray = items.ToCharArray();
PricingRule[] rules = new PricingRule[]
{
new PricingRule('A', 50),
new PricingRule('B', 30),
new PricingRule('C', 20),
new PricingRule('D', 15),
new PricingRule('A', 3, 130),
new PricingRule('B', 2, 45),
};
Checkout checkout = new Checkout(rules);
foreach (char item in itemsArray)
{
checkout.Scan(item);
}
return(checkout.Total);
}
static void Main(string[] args)
{
assert_equal(0, price(""));
assert_equal(50, price("A"));
assert_equal(80, price("AB"));
assert_equal(115, price("CDBA"));
assert_equal(100, price("AA"));
assert_equal(130, price("AAA"));
assert_equal(180, price("AAAA"));
assert_equal(230, price("AAAAA"));
assert_equal(260, price("AAAAAA"));
assert_equal(160, price("AAAB"));
assert_equal(175, price("AAABB"));
assert_equal(190, price("AAABBD"));
assert_equal(190, price("DABABA"));
PricingRule[] rules = new PricingRule[]
{
new PricingRule('A', 50),
new PricingRule('B', 30),
new PricingRule('C', 20),
new PricingRule('D', 15),
new PricingRule('A', 3, 130),
new PricingRule('B', 2, 45),
};
Checkout co = new Checkout(rules);
assert_equal(0, co.Total);
co.Scan('A'); assert_equal(50, co.Total);
co.Scan('B'); assert_equal(80, co.Total);
co.Scan('A'); assert_equal(130, co.Total);
co.Scan('A'); assert_equal(160, co.Total);
co.Scan('B'); assert_equal(175, co.Total);
}