What is the primary advantage of using LR parsing over LL parsing?
Practice Questions
Q1
What is the primary advantage of using LR parsing over LL parsing?
Simplicity of implementation.
Ability to handle left recursion.
Lower memory usage.
Faster parsing speed.
Questions & Step-by-Step Solutions
What is the primary advantage of using LR parsing over LL parsing?
Step 1: Understand what LR parsing is. LR parsing is a bottom-up parsing technique that reads input from left to right and constructs a rightmost derivation in reverse.
Step 2: Understand what LL parsing is. LL parsing is a top-down parsing technique that reads input from left to right and constructs a leftmost derivation.
Step 3: Identify the limitation of LL parsing. LL parsing cannot handle left recursion, which occurs when a non-terminal in a grammar can eventually lead back to itself in a leftmost manner.
Step 4: Recognize the advantage of LR parsing. LR parsing can handle left recursion, allowing it to parse a wider range of grammars that LL parsing cannot.
Step 5: Conclude that the primary advantage of LR parsing over LL parsing is its ability to handle left recursion.
