Program 1
# Stack Implementation using list
stack=[] # Empty stack
# push element in stack
def push():
n=int(input("Enter and element: "))
if(len(stack)==0):
stack.append(n)
else:
stack.insert(0,n)
# pop element in stack
def pop():
if(len(stack)==0):
print("Stack is empty")
else:
print("Poped element is: ",stack[0])
del stack[0]
# display elements of stack
def display():
if(len(stack)==0):
print("Stack is empty")
else:
print("Elements of stack: ")
for element in stack:
print(element)
# Main
while(1):
print("------------------Stack Menu--------------------")
print("1. Push \n 2. Pop \n 3. Display \n 4.Exit")
print("---------------------------------------------------")
choice=int(input("Enter your choice: "))
if(choice==1):
push()
elif(choice==2):
pop()
elif(choice==3):
display()
else:
break
