Which of the following is a common technique used in lexical analysis?
Practice Questions
Q1
Which of the following is a common technique used in lexical analysis?
Recursive descent parsing
Finite state machines
Dynamic programming
Backtracking
Questions & Step-by-Step Solutions
Which of the following is a common technique used in lexical analysis?
Step 1: Understand what lexical analysis is. It is the process of breaking down text into smaller parts called tokens.
Step 2: Learn about tokens. Tokens are the meaningful pieces of text, like keywords, operators, or identifiers in programming languages.
Step 3: Know that regular expressions are patterns used to describe sets of strings. They help in identifying tokens.
Step 4: Familiarize yourself with finite state machines (FSMs). An FSM is a model that can be in one of many states and can change states based on input.
Step 5: Realize that FSMs can be used to recognize patterns defined by regular expressions. This makes them useful for identifying tokens during lexical analysis.
Step 6: Conclude that using finite state machines is a common technique in lexical analysis because they efficiently recognize tokens.
