I can use Stack(), push(), pop(), peek(), size() and is_empty().

Define a function named get_stack(string_of_chars) which takes a string as a parameter. A letter in the parameter string means a push() operation and an asterisk means a pop operation. The function should print the sequence of values returned by the pop operations when this sequence of operations is performed on an initially empty LIFO stack.

For example:

Test	Result
get_stack("EAS*Y*")	S Y
get_stack("EAS*Y*Q*E")	S Y Q