Balanced Parenthesis Problem
Detailed guide and Python implementation for the 'Balanced Parenthesis Problem' problem.
Problem Statement
Write a function is_balanced(s) that takes a string s containing only the characters '(', ')', '{', '}', '[' and ']', and returns True if the parentheses are balanced and properly nested, False otherwise. An empty string is considered balanced.
- •0 <= len(s) <= 10^4
- •s consists only of '(', ')', '{', '}', '[', ']'
Examples
s = '({[]})'True
Each opening bracket has a matching closing bracket in the correct order: ( matches ), { matches }, [ matches ].
s = '({[})'False
The [ is closed by } which is a mismatch.
s = ''
True
An empty string is considered balanced.
Need a Hint?
Edge Cases to Watch
- Empty input structures
- Single element inputs
- Large numerical bounds
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