empty listOfInts successfully created

and confirmed to be empty. 

Pushed 1 on front 
List now contains: 1

Pushed 2 on front 
List now contains: 2 , 1

Pushed 3 on front 
List now contains: 3 , 2 , 1

Pushed 4 on front 
List now contains: 4 , 3 , 2 , 1

Pushed 5 on front 
List now contains: 5 , 4 , 3 , 2 , 1

Pushed 6 on front 
List now contains: 6 , 5 , 4 , 3 , 2 , 1

Pushed 0 on back 
List now contains: 6 , 5 , 4 , 3 , 2 , 1 , 0

and is now not empty. 

listOfInts contains 7 elements. 
Specifically: 6 , 5 , 4 , 3 , 2 , 1 , 0

Now we double all values: and get ...: 12 , 10 , 8 , 6 , 4 , 2 , 0

Now we reverse the list and get: 0 , 2 , 4 , 6 , 8 , 10 , 12

and reverse it again and get: 12 , 10 , 8 , 6 , 4 , 2 , 0

Backwards that is ... 0 , 2 , 4 , 6 , 8 , 10 , 12

The item at the front is: 12

The item at the back is: 0

Popped from the front, listOfInts now contains 6 elements. 
Specifically: 10 , 8 , 6 , 4 , 2 , 0

Backwards that is ... 0 , 2 , 4 , 6 , 8 , 10

Popped from the front, listOfInts now contains 5 elements. 
Specifically: 8 , 6 , 4 , 2 , 0

Backwards that is ... 0 , 2 , 4 , 6 , 8

Popped from the front, listOfInts now contains 4 elements. 
Specifically: 6 , 4 , 2 , 0

Backwards that is ... 0 , 2 , 4 , 6

Popped from the front, listOfInts now contains 3 elements. 
Specifically: 4 , 2 , 0

Backwards that is ... 0 , 2 , 4

Popped from the front, listOfInts now contains 2 elements. 
Specifically: 2 , 0

Backwards that is ... 0 , 2

Popped from the front, listOfInts now contains 1 elements. 
Specifically: 0

Backwards that is ... 0

Can we reverse an empty list??
Yes!!