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一个程序,用于判定给定的文法是否为算符优先文法。 实现了:1.文法的机内表示;2. FIRSTVT集和LASTVT集的计算; 3. 算符优先关系矩阵的构造。-a procedure for the determination of grammar to whether the operator priority to grammar. Realized : 1. Grammar said the machines; 2. LASTVT FIRSTVT sets and set computing; 3. Operator precedence relations of the matrix structure.