65 lines
1.7 KiB
Python
65 lines
1.7 KiB
Python
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import re
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import random
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import operator
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# Define operators and their corresponding functions
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ops = {
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'+': operator.add,
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'-': operator.sub,
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'*': operator.mul,
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'/': operator.truediv
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}
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def calculate(expression, num=1):
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"""Calculate the result of the expression using n[0], n[1], ..."""
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numbers = [random.randint(1, 10) for _ in range(num)]
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print(numbers)
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# Replace placeholders with actual number values
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for i, num in enumerate(numbers):
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placeholder = f'n{i}'
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expression = re.sub(rf'\{placeholder}\s*([+-/*])', rf'{num} \1', expression)
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expression = re.sub(rf'({placeholder})\s*', rf'{num}', expression)
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print(expression)
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# Evaluate the result
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return eval(expression)
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def parse_expression(expression):
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"""Parse an algebraic expression and determine the required number of numbers"""
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op_count = 0
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# Count operators in parentheses
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paren_count = 1
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max_depth = 0
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for i, char in enumerate(expression):
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if char == '(':
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paren_count += 1
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elif char == ')':
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paren_count -= 1
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# Update max depth when a closed parenthesis is encountered
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max_depth = max(max_depth, paren_count)
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if char in ops.keys():
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op_count += 1
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return max_depth + op_count
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def main():
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expression = input("Enter an algebraic structure (e.g., -(+)): ")
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# Handle the empty string case by providing a default expression
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if not expression:
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expression = 'n0-(n1+n2)'
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num_needed = parse_expression(expression)
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result = calculate(expression, num_needed)
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print(f"Generated calculation: {expression}")
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print(f"Result: {result}")
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if __name__ == "__main__":
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main()
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