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Computer Science

Write a program that, depending upon the user's choice, either adds or removes an element from a Stack.

Python

Python Stack

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Answer

def add(stack):
    h = input("Enter element: ")
    stack.append(h)

def remove(stack):
    if len(stack) == 0:
        print("No element to delete")
    else:
        print("Deleted element is:", stack.pop())


stack = []
while True:
    print("1. Add element")
    print("2. Delete element")
    print("3. Exit")
    op = int(input("Enter the Choice: "))
    if op == 1:
        add(stack)
    elif op == 2:
        remove(stack)
    elif op == 3:
        print("Exiting program.")
        break

Output

1. Add element
2. Delete element
3. Exit
Enter the Choice: 1
Enter element: 11
1. Add element
2. Delete element
3. Exit
Enter the Choice: 1
Enter element: 33
1. Add element
2. Delete element
3. Exit
Enter the Choice: 1
Enter element: 44
1. Add element
2. Delete element
3. Exit
Enter the Choice: 2
Deleted element is: 44
1. Add element
2. Delete element
3. Exit
Enter the Choice: 1
Enter element: 55
1. Add element
2. Delete element
3. Exit
Enter the Choice: 2
Deleted element is: 55
1. Add element
2. Delete element
3. Exit
Enter the Choice: 3
Exiting program.

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