下推自動機 (PDA) 是包含子串 bbb 的 PDA 的補集步驟製作接受包含 bbb 的字串的 PDA。透過將不接受的設為接受,反之亦然,對其進行補充。構造 PDACan you construct the PDA as shown below for the (a, b)* languageThe nature of transition format is Input, Top of stack, PUSH/POPExamplea ,a , aa means on i/p a and top of stack is a then push aAt q0 i, e initial if a or b anything came move state to q1Till q1 we get 1 b to make substring b_ _ so now on q1 if ... 閱讀更多