The following text was written to the standard output stream when the NumberList.java? program was executed from IntelliJ.
>>> display 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 >>> print last 15 >>> print first 1 >>> print 2 2 >>> swap 1 2 >>> display 2 1 3 4 5 6 7 8 9 10 11 12 13 14 15 >>> add last 16 >>> add first 0 >>> display 0 2 1 3 4 5 6 7 8 9 10 11 12 13 14 15 16 >>> 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 >>> exit Process finished with exit code 0