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What is the main characteristic of LL parsing?

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Question: What is the main characteristic of LL parsing?

Options:

  1. It uses a top-down approach.
  2. It uses a bottom-up approach.
  3. It requires left recursion.
  4. It is non-deterministic.

Correct Answer: It uses a top-down approach.

Solution: 

LL parsing is a top-down parsing technique that processes the input from left to right and constructs a leftmost derivation of the sentence.

What is the main characteristic of LL parsing?

Practice Questions

Q1
What is the main characteristic of LL parsing?
  1. It uses a top-down approach.
  2. It uses a bottom-up approach.
  3. It requires left recursion.
  4. It is non-deterministic.

Questions & Step-by-Step Solutions

What is the main characteristic of LL parsing?
  • Step 1: Understand that LL parsing is a method used in computer science for analyzing the structure of sentences in programming languages.
  • Step 2: Recognize that 'LL' stands for 'Left-to-right' and 'Leftmost derivation'.
  • Step 3: Know that in LL parsing, the input is read from left to right, meaning it processes the characters in the order they appear.
  • Step 4: Learn that 'Leftmost derivation' means that the parser always expands the leftmost non-terminal symbol first when constructing the sentence.
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