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- Write recursive and non-recursive functions that check parenthesis in a string.

Example:
Input string: (a(b(c)d)e)
Output: true
Posted 6-Jan-13 3:59am
Comments
Sandeep Mewara at 6-Jan-13 11:30am
   
What have you tried so faR?
ridoy at 6-Jan-13 15:30pm
   
try to do it yourself,if face any problem then come here to share with us..

1 solution

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Solution 1

Since this smells lots of homework, I'll give you no code.
 
But, it's not complex.
Non recursive:
 
0) Create a integer counter , set to zero.
1) Loop through each character in the string (a foreach loop is perfect for this)
1.0) If the character is a '(', increment the count by one
1.1) If the character is a ')', decrement the count by one
2) After the loop, check the count - if it is zero, all brackets match.
 
Recursive:
I wouldn't use recursion for this. It's a sledgehammer to crack a simple nut...
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Comments
ProgramFOX at 6-Jan-13 10:11am
   
Good answer, +5!

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