文法G(S):S → aSQR | abRRQ → QRbQ → bbbR → bccR → cc是Chomsky哪一型文法?
文法G(S):S → aSQR | abRRQ → QRbQ → bbbR → bccR → cc是Chomsky哪一型文法?
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文法G(S):S → aSQR | abRRQ → QRbQ → bbbR → bccR → cc是Chomsky哪一型文法?