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parentbit challenge

Posted on 2016-09-21
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Last Modified: 2016-09-22
Hi,

I am going through below challenge

Recursion-1 > parenBit
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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)"
i have not understood the description. please advise
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Question by:gudii9
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Expert Comment

by:zzynx
ID: 41810242
>> i have not understood the description.
What don't you understand?

Given a string containing '(' and ')', you have to strip off everything before the '(' and after the ')'.
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Accepted Solution

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zzynx earned 500 total points
ID: 41810256
Consider this:
public String parenBit(String str) {
  if (str.startsWith("(")) {
     return "(" + str.substring(1, str.indexOf(")")+1);
  }
  return parenBit(str.substring(1));
}

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Author Comment

by:gudii9
ID: 41810896
i missed the link

http://codingbat.com/prob/p137918


i understood the chalenge now
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