??? ?????? ???? ?????????? ????? ?? ???? ????: ?? ?????? ??? ?"? {a,b} ??? ?? ?????? n bn a ???? n>0 - PowerPoint PPT Presentation

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Title:

??? ?????? ???? ?????????? ????? ?? ???? ????: ?? ?????? ??? ?"? {a,b} ??? ?? ?????? n bn a ???? n>0

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Title: PowerPoint Created Date: 1/1/1601 12:00:00 AM Document presentation format: On-screen Show Other titles: Times New Roman Arial Wingdings Quadrant ... – PowerPoint PPT presentation

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Title: ??? ?????? ???? ?????????? ????? ?? ???? ????: ?? ?????? ??? ?"? {a,b} ??? ?? ?????? n bn a ???? n>0


1
???????? ????? ????????
  • ?"? ???????? ??????
  • ????? ????? ?????? ????? ?????

2
???? ????????
  • ?????
  • ??? ?????? ???? ?????????? ????? ?? ???? ???? ??
    ?????? ??? ?"? a,b ??? ?? ?????? n bn a
    ???? ngt0

3
?????
  • ?? ??? L ?????? ???? ?????? ???? ?????????? A
    ?????? LL(A), ????? ??? ???????.

4
?????
  • ???? ????? ??? ???????.
  • ???? e ??? ???????.
  • ??? ae? ???? a ??? ???????.
  • ??? xe? ???? x ??? ???????
  • ???? ? ??? ???????.

5
??????
  1. ?? L1 ?- L2 ??? ???? ???????? ??? ?"? ? ???
    ????? ??? ????? ??? ??? ???????.
  2. ?? L1 ?- L2 ??? ???? ???????? ??? ?"? ? ???
    ????? ??? ????? ??? ??? ???????.
  3. ?? L ??? ??????? ??? ?"? ? ?? ???? ??????? ?? L
    ??? ??? ???????.
  4. ?? ??? ????? ??? ??? ???????.

6
????? ??? ????????
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