Zmiana C-Task

TaskC00/run.py

@@ -0,0 +1,71 @@
+import sys
+import copy
+
+class FSA:
+
+    def __init__(self):
+        self.initial_state = '0'
+        self.final_states = set()
+
+        self.transitions = dict()
+        self.alphabet = set()
+
+    def add_transition(self, state_from, state_to, symbol):
+
+        if state_from in self.transitions.keys():
+            if symbol not in self.transitions[state_from].keys():
+                self.transitions[state_from][symbol] = {state_to}
+            else:
+                self.transitions[state_from][symbol] |= {state_to}
+        else:
+            self.transitions[state_from] = dict()
+            self.transitions[state_from][symbol] = {state_to}
+
+    def add_final_state(self, state):
+        self.final_states.add(state)
+    def get_final_states(self, string):
+        current_states = {self.initial_state}
+        for symbol in string:            
+            new_current_states = set()
+            for current_state in current_states:                
+                try:
+                    new_current_states |= self.transitions[current_state][symbol]                
+                except:
+                    pass            
+                current_states = copy.deepcopy(new_current_states)
+        return current_states
+
+    
+
+    def accepts(self, string):
+        final_states = self.get_final_states(string)
+    
+        for final_state in final_states:
+            if final_state in self.final_states:
+                return True
+    
+        return False
+    
+
+
+fsa = FSA()
+
+table = open(sys.argv[1])
+for line in table:
+    line = line.rstrip()
+
+    if len(line.split('\t')) == 3:
+        a, b, c = line.split('\t')
+        fsa.add_transition(a, b, c)
+        fsa.alphabet.add(c)
+    else:
+        fsa.add_final_state(line)
+
+
+for line in sys.stdin:
+    line = line.rstrip()
+
+    if fsa.accepts(line):
+        print('YES')
+    else:
+        print('NO')

TaskC00/testnfa.out

@@ -0,0 +1,8 @@
+YES
+YES
+NO
+NO
+NO
+YES
+NO
+YES