67 lines
2.5 KiB
Python
67 lines
2.5 KiB
Python
import csv
|
|
|
|
def listFromFile(csv_file):
|
|
liste = []
|
|
with open(csv_file) as file:
|
|
data = csv.reader(file)
|
|
for i in data:
|
|
liste.append(i)
|
|
liste.pop(0)
|
|
for item in liste:
|
|
item[1] = float(item[1])
|
|
item[2] = float(item[2])
|
|
return liste
|
|
|
|
def sac_a_dos(actions, cout_maximal):
|
|
n = len(actions)
|
|
# Créer une table pour stocker les résultats des sous-problèmes
|
|
table = [[0 for x in range(cout_maximal + 1)] for x in range(n + 1)]
|
|
|
|
# Construire la table de programmation dynamique
|
|
for i in range(n + 1):
|
|
for w in range(int(cout_maximal) + 1):
|
|
print(w - actions[i-1]['cout'])
|
|
#print(w-actions[i-1])
|
|
if i == 0 or w == 0:
|
|
table[i][w] = 0.0
|
|
elif actions[i-1]['cout'] <= w:
|
|
table[i][w] = max(actions[i-1]['rendement'] + table[i-1][int(w-actions[i-1]['cout'])], table[i-1][w])
|
|
else:
|
|
table[i][w] = table[i-1][w]
|
|
|
|
|
|
for i in range(n + 1):
|
|
print(f"\ntable[{i}][60]", table[i][60], i-1)
|
|
print(f"actions[{i}-1]['rendement']", actions[i-1]['rendement'])
|
|
print(f"table[{i}-1][(60-actions[{i}-1]['cout'])]", table[i-1][(60-actions[i-1]['cout'])])
|
|
print(f"table[{i}-1][60]", table[i-1][60])
|
|
print(f"actions[{i}-1]['rendement'] + table[{i}-1][(60-actions[{i}-1]['cout'])], table[{i}-1][60]", actions[i-1]['rendement'] + table[i-1][(w-actions[i-1]['cout'])], table[i-1][w])
|
|
# Trouver les actions sélectionnées
|
|
w = cout_maximal
|
|
actions_selectionnees = []
|
|
for i in range(n, 0, -1):
|
|
if table[i][int(w)] != table[i-1][int(w)]:
|
|
actions_selectionnees.append(actions[i-1])
|
|
w -= actions[i-1]['cout']
|
|
|
|
return table[n][cout_maximal], actions_selectionnees
|
|
|
|
|
|
def display_result():
|
|
print(f"Rendement maximal: {rendement_maximal}%")
|
|
print("Actions sélectionnees:")
|
|
for action in actions_selectionnees:
|
|
print(
|
|
f"Nom: {action['nom']}, Cout: {action['cout']}, Rendement: {action['rendement']}%")
|
|
|
|
#actions = listFromFile("/home/b/Documents/OCR/projet7/actions.csv")
|
|
actions = listFromFile("/home/b/Documents/OCR/projet7/ph3/dataset1_Python+P7.csv")
|
|
# Conversion de la liste en dictionnaires pour faciliter l'accès
|
|
actions = [{'nom': action[0], 'cout': action[1], 'rendement': action[2]} for action in actions]
|
|
|
|
#print(actions[22]['cout'], type(actions[22]['cout']))
|
|
cout_maximal = 500
|
|
rendement_maximal, actions_selectionnees = sac_a_dos(actions, cout_maximal)
|
|
|
|
# display_result()
|