lib: Determinise string representation of {D,N}FA

lib/parser/__init__.py

@@ -71,7 +71,7 @@ def _unquote(txt: str) -> str:
 
 def dfa_to_str(dfa: DFA, full: bool = False) -> str:
     transition = ""
-    for key, dest_state in dfa.transition.items():
+    for key, dest_state in sorted(dfa.transition.items()):
         state_1, character = key
         transition += f"({state_1.name},{character.name})={dest_state.name} "
 
@@ -116,7 +116,7 @@ def cfg_to_str(gra: CFG, full: bool = False) -> str:
 
 def nfa_to_str(nfa: NFA, full: bool = False) -> str:
     transition = ""
-    for key, set_states in nfa.transition.items():
+    for key, set_states in sorted(nfa.transition.items()):
         state, character = key
         dest_states = nfa.transition[state, character]
         transition += f"({state.name},{character.name})=" \