Practice Left Factoring - Resolving Ambiguous Choices - 6.6.1 | Module 3: Syntax Analysis (Parsing) | Compiler Design /Construction
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6.6.1 - Left Factoring - Resolving Ambiguous Choices

Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is left factoring?

πŸ’‘ Hint: Think about how two rules might start the same way.

Question 2

Easy

What problem does left factoring solve?

πŸ’‘ Hint: Consider how an ambiguous grammar might confuse a parser.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is left factoring?

  • A method for creating ambiguity
  • A tool for predictive parsing
  • A technique to remove common prefixes

πŸ’‘ Hint: Consider the goal of removing confusion in grammar.

Question 2

True or False: Left factoring can resolve ambiguity in parsers.

  • True
  • False

πŸ’‘ Hint: Think about how left factoring clarifies the parsing process.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Given the grammar A -> aA | b perform left factoring and explain the reasoning.

πŸ’‘ Hint: Identify common starting symbols in A's rules.

Question 2

Propose a strategy for rewriting an ambiguous grammar for an arithmetic expression. Explain your approach using left factoring.

πŸ’‘ Hint: Look for operator precedence and regroup accordingly.

Challenge and get performance evaluation