mirror of
https://github.com/TheAlgorithms/Python.git
synced 2024-11-28 07:21:07 +00:00
64 lines
1.9 KiB
Python
64 lines
1.9 KiB
Python
|
class things:
|
||
|
def __init__(self, n, v, w):
|
||
|
self.name = n
|
||
|
self.value = v
|
||
|
self.weight = w
|
||
|
|
||
|
def __repr__(self):
|
||
|
return f"{self.__class__.__name__}({self.name}, {self.value}, {self.weight})"
|
||
|
|
||
|
def get_value(self):
|
||
|
return self.value
|
||
|
|
||
|
def get_name(self):
|
||
|
return self.name
|
||
|
|
||
|
def get_weight(self):
|
||
|
return self.weight
|
||
|
|
||
|
def value_Weight(self):
|
||
|
return self.value / self.weight
|
||
|
|
||
|
|
||
|
def build_menu(name, value, weight):
|
||
|
menu = []
|
||
|
for i in range(len(value)):
|
||
|
menu.append(things(name[i], value[i], weight[i]))
|
||
|
return menu
|
||
|
|
||
|
|
||
|
def greedy(item, maxCost, keyFunc):
|
||
|
itemsCopy = sorted(item, key=keyFunc, reverse=True)
|
||
|
result = []
|
||
|
totalValue, total_cost = 0.0, 0.0
|
||
|
for i in range(len(itemsCopy)):
|
||
|
if (total_cost + itemsCopy[i].get_weight()) <= maxCost:
|
||
|
result.append(itemsCopy[i])
|
||
|
total_cost += itemsCopy[i].get_weight()
|
||
|
totalValue += itemsCopy[i].get_value()
|
||
|
return (result, totalValue)
|
||
|
|
||
|
|
||
|
def test_greedy():
|
||
|
"""
|
||
|
>>> food = ["Burger", "Pizza", "Coca Cola", "Rice",
|
||
|
... "Sambhar", "Chicken", "Fries", "Milk"]
|
||
|
>>> value = [80, 100, 60, 70, 50, 110, 90, 60]
|
||
|
>>> weight = [40, 60, 40, 70, 100, 85, 55, 70]
|
||
|
>>> foods = build_menu(food, value, weight)
|
||
|
>>> foods # doctest: +NORMALIZE_WHITESPACE
|
||
|
[things(Burger, 80, 40), things(Pizza, 100, 60), things(Coca Cola, 60, 40),
|
||
|
things(Rice, 70, 70), things(Sambhar, 50, 100), things(Chicken, 110, 85),
|
||
|
things(Fries, 90, 55), things(Milk, 60, 70)]
|
||
|
>>> greedy(foods, 500, things.get_value) # doctest: +NORMALIZE_WHITESPACE
|
||
|
([things(Chicken, 110, 85), things(Pizza, 100, 60), things(Fries, 90, 55),
|
||
|
things(Burger, 80, 40), things(Rice, 70, 70), things(Coca Cola, 60, 40),
|
||
|
things(Milk, 60, 70)], 570.0)
|
||
|
"""
|
||
|
|
||
|
|
||
|
if __name__ == "__main__":
|
||
|
import doctest
|
||
|
|
||
|
doctest.testmod()
|