CS1 Standard Demo Page

>>> help
HELP - display a menu of commands
DISPLAY - display the list of numbers
PRINT - print a number(FIRST;LAST;nth)
SWAP - exchange two elements (nth;mth)
ADD - add a number to the list(FIRST;LAST)
EXIT - terminate execution of the program
>>> add first www
>>> add first qqq
>>> display
qqq
www
k
o
k
o
a
u
n
g
a
n
d
j
a
v
a
>>> add last eee
>>> print last
eee
>>> swap 1 17
>>> display
a
www
k
o
k
o
a
u
n
g
a
n
d
j
a
v
qqq
eee
>>> exit