Regular Expression to Minimal DFA
Convert regular expressions to finite automata using Thompson's construction
Regex to Automata Converter
Complete pipeline: Regex → NFA-ε → DFA → Minimal DFA using Thompson's construction
Regular Expression to Minimal DFA 🔄
Complete pipeline: Regex → NFA-ε → DFA → Minimal DFA using Thompson's construction
Conversion Pipeline
Regular Expression
NFA-ε
Thompson's
DFA
Subset Construction
Minimal DFA
Partition Refinement
Regular Expression Examples
(a|b)*abb
Strings ending with 'abb'
Any sequence of a's and b's followed by 'abb'
a*b+
Zero or more a's followed by one or more b's
Kleene star for a's, plus operator for b's
(ab)*
Zero or more repetitions of 'ab'
Kleene star applied to concatenation
a(b|c)*d
Starts with 'a', ends with 'd', any b's or c's in between
Union inside Kleene star with concatenation
(0|1)*0
Binary strings ending with 0
Any binary string followed by final 0
a+b*c?
One or more a's, zero or more b's, optional c
Plus, star, and optional operators combined
Regular Expression Input
Supported Syntax:
a - Character| - Union (OR)* - Kleene star+ - One or more? - Optional() - GroupingKey Insights
Thompson's Construction
Complete Pipeline
Real-World Applications
🔍 Text Processing
Search engines and text editors convert regex patterns to efficient DFAs for fast pattern matching in large documents.
⚙️ Lexical Analysis
Compilers use this pipeline to convert token patterns (defined as regexes) into efficient scanners.
🌐 Network Security
Intrusion detection systems convert attack signature patterns into minimal DFAs for real-time monitoring.