type Cashier struct {
customers_done int
n int
discount int
products []int
prices []int
}
func Constructor(n int, discount int, products []int, prices []int) Cashier {
var cashier Cashier
cashier.customers_done = 0
cashier.n = n
cashier.discount = discount
cashier.products = products
cashier.prices = prices
return cashier
}
func (self *Cashier) GetBill(product []int, amount []int) float64 {
self.customers_done++
var bill float64
for i:=0; i<len(product); i++ {
var price int
for _i, _product := range self.products {
if _product == product[i] {
price = self.prices[_i]
break
}
}
bill += float64(price * amount[i])
}
if self.customers_done % self.n == 0 {
bill *= ((100.0 - float64(self.discount)) / 100.0)
}
return bill
}
/**
* Your Cashier object will be instantiated and called as such:
* obj := Constructor(n, discount, products, prices);
* param_1 := obj.GetBill(product,amount);
*/