从列表中返回最大序列

Question

我正在尝试编写一个带有控制台UI的程序，用户可以在其中输入序列，如果按2或3，则可以找到最长的相等整数序列和最长的"；山；顺序分别

当我按1时，一切都很顺利，我可以进入列表，但当我按2时(我还没有实现3)，什么都没发生

示例输入：按1、1 2 2 2 4后，然后按2

预期输出：4

实际输出：没有，程序不工作

(我希望标题是正题)

def lista_egale(lst1):
l = 0
prev_one = None
lmax = -1
for current in lst1:
if prev_one == current:
l += 1
elif l > lmax:
lmax = l
l = 0
prev_one = current
print(lmax)
def afiseaza_meniu():
print("Aplicatie cu liste")
print("1. Introduceti lista")
print("2. Verificati daca lista are o secventa maxima cu numere egale si afisati-o")
print("3. Verificati daca lista este de tip munte si afisati-o")
print("4. exit")

def ui_citire_lista(lst1):
input_string = input("Introduceti numerele ")
lst1 = input_string.split()
def ui_afisare_munte():
pass
def run():
global lst1
lst1 = []
afiseaza_meniu()
while True:
cmd = input(">>>")
if cmd == "4":
return
if cmd == "1":
ui_citire_lista(lst1)
elif cmd == "2":
lista_egale(lst1)
elif cmd == "3":
ui_afisare_munte()
else:
print("comanda invalida")
def main():
run()
#test_egale()
#test_munte()
if __name__ == "__main__":
main()

Answer 1

您的代码不起作用，因为ui_citire_lista只在本地分配lst1。您应该返回值并在run(其中它是全局的)中捕获它

更改为ui_citire_lista:

def ui_citire_lista():
input_string = input("Introduceti numerele ")
return input_string.split()

更改为run:

if cmd == "1":
lst1 = ui_citire_lista()

注意。还有其他问题，但我会让你自己发现；)如果你遇到麻烦，不要犹豫，可以再次发帖

Answer 2

这里有一个返回输入的版本，但您必须更正lista_egle函数。

def lista_egale(lst1):
l = 0
prev_one = None
lmax = -1
for current in lst1:
if prev_one == current:
l += 1
elif l > lmax:
lmax = l
l = 0
prev_one = current
# print(lmax)
return lmax
def afiseaza_meniu():
print("Aplicatie cu liste")
print("1. Introduceti lista")
print("2. Verificati daca lista are o secventa maxima cu numere egale si afisati-o")
print("3. Verificati daca lista este de tip munte si afisati-o")
print("4. exit")

def ui_citire_lista(lst1):
input_string = input("Introduceti numerele ")
lst1 = input_string.split()
def ui_afisare_munte():
pass
def run():
global lst1
lst1 = []
afiseaza_meniu()
result = None
while True:
cmd = input(">>>")
if cmd in ['1','2','3','4']:
lst1.append(cmd)
else:
print("comanda invalida")
if cmd == "4":
print('longest sequence is', result)
return result
elif cmd == "1":
ui_citire_lista(lst1)
elif cmd == "2":
result = lista_egale(lst1)
elif cmd == "3":
ui_afisare_munte()

def main():
run()
#test_egale()
#test_munte()
if __name__ == "__main__":
main()