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64 lines
1.9 KiB
Python
64 lines
1.9 KiB
Python
class things:
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def __init__(self, name, value, weight):
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self.name = name
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self.value = value
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self.weight = weight
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def __repr__(self):
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return f"{self.__class__.__name__}({self.name}, {self.value}, {self.weight})"
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def get_value(self):
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return self.value
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def get_name(self):
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return self.name
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def get_weight(self):
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return self.weight
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def value_Weight(self):
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return self.value / self.weight
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def build_menu(name, value, weight):
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menu = []
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for i in range(len(value)):
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menu.append(things(name[i], value[i], weight[i]))
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return menu
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def greedy(item, maxCost, keyFunc):
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itemsCopy = sorted(item, key=keyFunc, reverse=True)
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result = []
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totalValue, total_cost = 0.0, 0.0
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for i in range(len(itemsCopy)):
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if (total_cost + itemsCopy[i].get_weight()) <= maxCost:
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result.append(itemsCopy[i])
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total_cost += itemsCopy[i].get_weight()
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totalValue += itemsCopy[i].get_value()
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return (result, totalValue)
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def test_greedy():
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"""
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>>> food = ["Burger", "Pizza", "Coca Cola", "Rice",
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... "Sambhar", "Chicken", "Fries", "Milk"]
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>>> value = [80, 100, 60, 70, 50, 110, 90, 60]
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>>> weight = [40, 60, 40, 70, 100, 85, 55, 70]
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>>> foods = build_menu(food, value, weight)
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>>> foods # doctest: +NORMALIZE_WHITESPACE
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[things(Burger, 80, 40), things(Pizza, 100, 60), things(Coca Cola, 60, 40),
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things(Rice, 70, 70), things(Sambhar, 50, 100), things(Chicken, 110, 85),
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things(Fries, 90, 55), things(Milk, 60, 70)]
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>>> greedy(foods, 500, things.get_value) # doctest: +NORMALIZE_WHITESPACE
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([things(Chicken, 110, 85), things(Pizza, 100, 60), things(Fries, 90, 55),
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things(Burger, 80, 40), things(Rice, 70, 70), things(Coca Cola, 60, 40),
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things(Milk, 60, 70)], 570.0)
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"""
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if __name__ == "__main__":
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import doctest
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doctest.testmod()
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