IMPORTANT: Please do not post solutions, hints, or other spoilers until at least 60 hours after the date of this message. Thanks. IMPORTANT: S'il vous plaît, attendez au minimum 60 heures après la date de ce message avant de poster solutions, indices ou autres révélations. Merci. WICHTIG: Bitte schicken Sie keine Lösungen, Tipps oder Hinweise für diese Aufgabe vor Ablauf von 60 Stunden nach dem Datum dieser Mail. Danke. ---------------------------------------------------------------- Write a program, 'parens', which gets a command line argument, n', which is an integer. The program should print all the properly-balanced strings of parentheses of length 2n. For example, given the argument '3', the program should print these five lines: ((())) (()()) (())() ()(()) ()()() in some order. (The order is not important.) For the argument '1'; the output should be: () and for argument '4', the output should be: (((()))) ((()())) ((())()) ((()))() (()(())) (()()()) (()())() (())(()) (())()() ()((())) ()(()()) ()(())() ()()(()) ()()()() in some order. [ ADMIN: I'm still hoping someone will step forward to write a report about expert quiz #22. - MJD ]