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24 lines
673 B
Python
24 lines
673 B
Python
from .stack import Stack
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__author__ = "Omkar Pathak"
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def balanced_parentheses(parentheses):
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""" Use a stack to check if a string of parentheses is balanced."""
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stack = Stack(len(parentheses))
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for parenthesis in parentheses:
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if parenthesis == "(":
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stack.push(parenthesis)
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elif parenthesis == ")":
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if stack.is_empty():
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return False
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stack.pop()
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return stack.is_empty()
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if __name__ == "__main__":
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examples = ["((()))", "((())", "(()))"]
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print("Balanced parentheses demonstration:\n")
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for example in examples:
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print(example + ": " + str(balanced_parentheses(example)))
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