83 lines
2.8 KiB
Python
83 lines
2.8 KiB
Python
from finite_automaton import FiniteAutomaton
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def main():
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alphabet = set("+-0123456789.,eE")
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initial_state = "S0"
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final_states = {"S2", "S4", "S7", "S8", "S9"}
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transitions = {
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"S0": [("+-", "S1"), ("123456789", "S2"), ("0", "S8")],
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"S1": [("123456789", "S2"), ("0", "S8")],
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"S2": [("0123456789", "S2"), (".,", "S3"), ("eE", "S5")],
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"S3": [("0123456789", "S4")],
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"S4": [("0123456789", "S4"), ("eE", "S5")],
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"S5": [("+-", "S6"), ("123456789", "S7"), ("0", "S9")],
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"S6": [("123456789", "S7"), ("0", "S9")],
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"S7": [("0123456789", "S7")],
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"S8": [(".,", "S3")],
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}
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automaton = FiniteAutomaton(
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transitions=transitions,
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initial_state=initial_state,
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final_states=final_states,
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alphabet=alphabet,
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)
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print("Конечный автомат для распознавания форматов вещественных чисел")
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print("=" * 60)
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print("Варианты команд:")
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print(" - check <строка> - проверить, соответствует ли строка автомату")
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print(
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" - gen [<вероятность_остановки>] - сгенерировать случайную строку (по умолчанию 0.3)"
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)
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print(" - q - выход из программы")
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print("=" * 60)
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while True:
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command = input("\nВведите команду: ").strip()
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if not command:
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continue
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parts = command.split()
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cmd = parts[0].lower()
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if cmd == "q":
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print("Выход из программы.")
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break
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elif cmd == "check":
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input_string = ""
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if len(parts) > 1:
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input_string = " ".join(parts[1:]).strip()
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message, transitions = automaton.process_input(input_string)
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print(f"Результат: {message}")
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print("Путь переходов:", " -> ".join(transitions))
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elif cmd == "gen":
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stop_prob = 0.3
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if len(parts) > 1:
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try:
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stop_prob = float(parts[1])
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if not (0 < stop_prob <= 1):
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raise ValueError(
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"Вероятность должна быть больше 0 и меньше либо равна 1"
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)
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except ValueError as e:
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print(f"Ошибка: {e}")
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continue
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random_string = automaton.generate_random_string(stop_prob)
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print(f"Сгенерированная строка: {random_string}")
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else:
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print(f"Неизвестная команда: {cmd}")
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if __name__ == "__main__":
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main()
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