Elimination of left factoring in the given grammar For each nonterminal A find the longest prefix (alpha) common to two or more of its alternatives.If alpha is not equal epsilon,i.e..,there is a nontrivial common prefix,replace all the A productions Aàalpha beta1|alpha beta2|…|alpha betan|gamma where gamma represents all alternatives that donot begin with alpha by AàalphaA’|gamma A’àbeta1|beta2|…..|betan Here A’ is the new terminal.. Repeatedly apply this transformation until no two alternatives for a nonterminal have a common prefix.

parser.docx

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