Basic Recursion, Check Balanced Parenthesis

Posted by pws5068 on Stack Overflow See other posts from Stack Overflow or by pws5068
Published on 2010-04-26T03:41:21Z Indexed on 2010/04/26 3:43 UTC
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recursion

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homework

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nested

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stack

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recursive

Greetings all,

I've written software in the past that uses a stack to check for balanced equations, but now I'm asked to write a similar algorithm recursively to check for properly nested brackets and parenthesis.

Good examples: () [] () ([]()[])

Bad examples: ( (] ([)]

Suppose my function is called: isBalanced.

Should each pass evaluate a smaller substring (until reaching a base case of 2 left)? Or, should I always evaluate the full string and move indices inward?

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