Question

Consider a list named Nums which contains random integers.

Write the following user defined functions in Python and perform the specified operations on a stack named BigNums. 

1. PushBig(): It checks every number from the list Nums and pushes all such numbers which have 5 or more digits into the stack, BigNums. 
2. PopBig(): It pops the numbers from the stack, BigNums and displays them. The function should also display "Stack Empty" when there are no more numbers left in the stack.

For example: If the list Nums contains the following data:
Nums = [213, 10025, 167, 254923, 14, 1297653, 31498, 386, 92765]

Then on execution of PushBig(), the stack BigNums should store:
[10025, 254923, 1297653, 31498, 92765]

And on execution of PopBig(), the following output should be displayed:
92765
31498
1297653
254923
10025
Stack Empty 

Answer 1

def PushBig(): 
     for n in Nums: 
        s=str(n) 
        if len(s) >= 5: 
            Nums.append(n) 
     def PopBig(): 
        ifNums==[]: 
            print("Stack empty") 
        else: 
            for n in range(len(Nums)-1,-1,-1): 
            print(Nums[n]) 
        else:
        print("Stack empty")