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class automata_ent:
stateN = 0
def isAccepted(self, _str):
i = len(_str)
_len = len(_str)
for i in range(len):
if self.stateN == 0:
self.start(_str[i])
if self.stateN == 1:
self.state1(_str[i])
if self.stateN == 2:
self.state2(_str[i])
if self.stateN == 3:
self.state3(_str[i])
else:
return 0
if self.stateN == 2 or self.stateN == 3:
return 1
else:
return 0
def start(self,c):
if(c == '1' or c == '2' or c == '3' or c == '4' or c == '5' or c == '6' or c == '7' or c == '8' or c == '9'):
self.stateN = 3
else if (c == '0'):
self.stateN = 2
else if (c == '-'):
self.stateN = 1
else
self.stateN = -1
def state1(self,c):
if (c == '1' or c == '2' or c == '3' or c == '4' or c == '5' or c == '6' or c == '7' or c == '8' or c == '9'):
self.stateN = 3
else:
self.stateN = -1
def state2(self,c):
self.stateN = -1
def state3(self,c)
{
if c.isdigit():
self.stateN = 3
else:
self.stateN = -1
}
def verified(self,token)
{
if isAccepted(token):
return true
else:
return false
}
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