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  1. import queue
  2. def Non_deterministic(poc_stanje,program):
  3.     q=queue.Queue()
  4.     q.push({poc_stanje[0],poc_stanje[1],poc_stanje[2]})
  5.     info=[]
  6.     while q.Empty()!=0:
  7.         izasao=False
  8.         elem=q.get()
  9.         head=elem[2]
  10.         state=elem[1]
  11.         tape=elem[0]
  12.         try:
  13.             current=program[state][tape[head]]
  14.         except:
  15.             print("Pogresan simbol")
  16.             exit(1)
  17.         while(len(current)==1):
  18.             state=current[0][0]
  19.             if(state=="q+"):
  20.                 return current[0]
  21.             if(state=="q-"):
  22.                 info.append(current)
  23.                 izasao=True
  24.                 break
  25.             tape[head]=current[0][1]
  26.             if(current[0][2]=="r"):
  27.                 head+=1
  28.             else: head-=1
  29.             if(head<0 or head>=len(tape)):
  30.                 info.append(current)
  31.                 izasao=True
  32.                 break
  33.  
  34.         if(not izasao):
  35.             for i in current:
  36.                 state=current[i][0]
  37.                 if(state=="q+"):
  38.                     return current[0]
  39.                 if(state=="q-"):
  40.                     info.append(current)  
  41.                     continue
  42.                 new_tape=tape.list()
  43.                 new_tape[head]=current[i][1]
  44.                 if(current[0][2]=="r"):
  45.                     new_head=head+1
  46.                 else: new_head=head-1
  47.                 if(head<0 or head>=len(tape)):
  48.                     info.append(current)              
  49.                 else:q.push({new_tape,state,new_head})
  50.            
  51.     return info
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