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worlion.py
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# EJERCICIO 07 - PILAS Y COLAS (by Worlion)
# Pila (stack)
stack = []
def initialize_stack():
stack = []
def push(item):
stack.append(item)
def pop():
if(len(stack) == 0):
raise Exception("Empty stack :(")
# return item = stack.pop() ¯\_(ツ)_/¯
item = stack[len(stack)-1]
del stack[len(stack)-1]
return item;
print("Jugando con la pila...")
print("Añado 4 valores")
push(3)
push(65)
push(1)
push(99)
print(f"Stack: {stack}")
print("elimino el primero: ")
print(f"pop: {pop()}")
print(f"Stack: {stack}")
print("elimino otro: ")
print(f"pop: {pop()}")
print(f"Stack: {stack}")
print(f"pop: {pop()}")
# print(f"Stack: {stack}")
# print(f"pop: {pop()}")
# print(f"Stack: {stack}")
# print(f"pop: {pop()}")
# print(f"Stack: {stack}")
# Cola (queue)
queue = []
def put(item):
queue.append(item)
def get():
if(len(queue) == 0):
raise Exception("Empty queue :(")
item = queue[0]
del queue[0]
return item;
print("Jugando con la cola...")
print("Añado 4 valores")
put("a")
put("b")
put("c")
put("d")
print(f"Queue: {queue}")
print("elimino el primero: ")
print(f"get: {get()}")
print(f"Queue: {queue}")
print("elimino otro: ")
print(f"get: {get()}")
print(f"Queue: {queue}")
print(f"get: {get()}")
print(f"Queue: {queue}")
print(f"get: {get()}")
print(f"Queue: {queue}")
# print(f"get: {get()}") # Daría excepcion
"""
* DIFICULTAD EXTRA (opcional):
"""
# Pintar de colores... para el menú ^_^
def red(skk): print("\033[91m {}\033[00m" .format(skk))
def grey(skk): print("\033[97m {}\033[00m" .format(skk))
def green(skk): print("\033[92m {}\033[00m" .format(skk))
print("\n ---- 🌩 DIFICULTAD EXTRA 🌩 ----\n")
def navegador():
back_history = []
forward_history = []
def navegar(page):
forward_history.clear()
back_history.append(page)
def adelante():
if(len(forward_history) == 0):
print("No se puede ir hacia adelante")
return
# pop adelante y push atrás
back_history.append(forward_history.pop())
def atras():
if(len(back_history) == 1):
print("No se puede ir hacia atrás, estás en inicio.")
return
# pop adelante y push atrás
forward_history.append(back_history.pop())
def print_menu():
print(f"\n\n\n -Página actual: '{back_history[len(back_history)-1]}'")
print("\nElija una opción o escriba la url a la que quiere navegar:")
if(len(forward_history) == 0):
grey("\t - 1: Adelante")
else:
green("\t - 1: Adelante")
if(len(back_history) == 1):
grey("\t - 2: Atrás")
else:
green("\t - 2: Atrás")
red("\t - 0: Salir")
return input("¿qué desea hacer?")
finish = False
navegar("Inicio")
while not finish :
action = print_menu()
if(action == "1" or action.upper() == "ADELANTE" ):
adelante()
elif(action == "2" or action.upper() == "ATRÁS" or action.upper() == "ATRAS" ):
atras()
elif(action == "0" or action.upper() == "SALIR" ):
finish = True
print ("exit...")
else:
print(f"navegar a {action}")
navegar(action)
navegador()
# Impresora
def impresora():
option = 1
impresora = []
def put_impresora(doc_name):
impresora.append(doc_name)
def get_impresora():
if(len(impresora) == 0):
red("Cola vacía, no hay nada que imprimir.")
return
document = impresora[0]
del impresora[0]
green(f"Imprimiendo documento: '{document}'")
def print_option_2():
msg = "\t - Escriba 'Imprimir' para comenzar la impresión'"
if(len(impresora) == 0):
grey(msg)
else:
green(msg)
def show_menu_impresora() -> str:
print("\nOpciones: ")
green("\t - Escriba el nombre del documento")
print_option_2()
red("\t - Escriba 'Salir' o '0' para salir de la aplicación'")
return input("\n\t > ")
def process_option(option: str):
if option == "0" or option.upper() == "SALIR":
return "0"
elif option.upper() == "IMPRIMIR":
get_impresora()
else:
put_impresora(option)
return 1
while(option != "0"):
print(f"\n\n\nCola de impresión: {impresora}")
option = process_option(show_menu_impresora())
impresora()