我已经让代码工作了,但是我已经在 python 中编写了实现堆栈的代码,它在 LIFO 之后推送和弹出,但是当您查看列表时,它会将其打印为:
1 
2 
3 
显示底部的最后一项是 3,我怎样才能让它像正确的堆栈一样在顶部显示最后一项?
我的代码如下:
stack_pointer = 0
stack =[]
max_length = 2
def view():
        for x in range (len(stack)):
            print(stack[x])
def push():
    global stack_pointer
    if len (stack)> max_length:
        print("Maximum stack length reached!") 
    else:
        stack_pointer = stack_pointer + 1
        item = input("Please enter the  item you wishto add to the stack: ")
        stack.append(item)
def pop():
    global stack_pointer
    if len (stack)<= 0:
        print ("stack is empty!")
    else:
        item = stack.pop
        stack_pointer = stack_pointer - 1
        print ("you just popped out: ", item)
while True:
    print ("")
    print("Python implementation of a stack")
    print("********************************")
    print("1. view Stack")
    print("2. Push onto Stack")
    print("3. Pop out of Stack")
    print("********************************")
    print("")
    menu_choice = int (input("Please enter your menu choice: "))
    print ("")
    print ("")
    if menu_choice == 1:
        view()
    elif menu_choice == 2:
        push()
    elif menu_choice == 3:
        pop()