74 lines
2.0 KiB
Python
74 lines
2.0 KiB
Python
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import sys
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class DFA:
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current_state = None
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def __init__(self, states, alphabet, transition_function, start_state, accept_states):
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self.states = states
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self.alphabet = alphabet
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self.transition_function = transition_function
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self.start_state = start_state
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self.accept_states = accept_states
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self.current_state = start_state
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return
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def transition_to_state_with_input(self, input_value):
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if ((self.current_state, input_value) not in self.transition_function.keys()):
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print((self.current_state, input_value) not in self.transition_function.keys())
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self.current_state = None
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return
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self.current_state = self.transition_function[(self.current_state, input_value)];
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return
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def in_accept_state(self):
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return self.current_state in accept_states
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def go_to_initial_state(self):
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self.current_state = self.start_state
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return
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def run_with_input_list(self, input_list):
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self.go_to_initial_state()
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for inp in input_list:
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self.transition_to_state_with_input(inp)
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continue
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return self.in_accept_state()
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pass
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states = []
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alphabet = []
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start_state = 0
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accept_states = []
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tf = dict()
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def makeTf():
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with open(sys.argv[1], 'r') as my_file:
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for line in my_file:
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arg = line.split(' ')
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if len(arg) > 2:
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a = arg[2].rstrip("\n")
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if a not in alphabet:
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alphabet.append(a)
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tf[(int(arg[0]), arg[2].rstrip("\n"))] = int(arg[1])
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else:
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accept_states.append(int(arg[0].rstrip("\n")))
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a = int(arg[0].rstrip("\n"))
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if a not in states:
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states.append(a)
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makeTf()
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d = DFA(states, alphabet, tf, start_state, accept_states)
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for line in sys.stdin:
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inp_program = list(line.rstrip("\n"))
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if d.run_with_input_list(inp_program):
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print("YES")
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else:
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print("NO")
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