Construct ∈-NFA of Regular Language L = (00)*1(11)*

The ε transitions in Non-deterministic finite automata (NFA) are used to move from one state to another without having any symbol from the input set Σ.

ε-NFA is defined in five tuple representation

{Q, q0, Σ, δ, F}


  • δ − Q × (Σ∪ε)→2Q

  • Q − Finite set of states

  • Σ − Finite set of the input symbol

  • q0 − Initial state

  • F − Final state

  • δ − Transition function

NFA without ε transition

NFA also has five states same as DFA, but with different transition function, as shown follows −



  • Q: Finite set of states

  • Σ: Finite set of the input symbol

  • q0: Initial state
  • F: Final state

  • δ: Transition function

Let’s consider the given language L = (00)*1(11)*.

The given language is divided into three parts (00)*, 1 and (11)*. Let’s construct the transition diagram for each part and finally concatenate the three parts to get the final result.

Step 1 − NFA with epsilon for (00)* is as follows −

Step 2 − NFA with epsilon for (11)* is as follows −

Step 3 − Concatenate first and second part with 1 in between, as follows −

Updated on: 14-Jun-2021

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