Which of the following statements is true about LL and LR parsers?

Practice Questions

Q1
Which of the following statements is true about LL and LR parsers?
  1. LL parsers are more powerful than LR parsers.
  2. LR parsers can handle all LL grammars.
  3. LL parsers can handle all LR grammars.
  4. Both LL and LR parsers are equivalent in power.

Questions & Step-by-Step Solutions

Which of the following statements is true about LL and LR parsers?
  • Step 1: Understand what LL and LR parsers are. LL parsers read input from Left to right and produce a Leftmost derivation. LR parsers also read input from Left to right but produce a Rightmost derivation.
  • Step 2: Know that LL parsers are generally simpler and can handle a subset of grammars called LL grammars.
  • Step 3: Recognize that LR parsers are more powerful and can handle a broader range of grammars, including all LL grammars.
  • Step 4: Realize that while all LL grammars can be parsed by LR parsers, not all LR grammars can be parsed by LL parsers due to their complexity.
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