Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.
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Recursion-1 > parenBiti have not understood the description. please advise
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Given a string that contains a single pair of parenthesis, compute recursively a new string made of only of the parenthesis and their contents, so "xyz(abc)123" yields "(abc)".
parenBit("xyz(abc)123") → "(abc)"
parenBit("x(hello)") → "(hello)"
parenBit("(xy)1") → "(xy)"
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