Obtain grammar to generate strings of a’s and b’s such that string length is multiple of three.

Question

Obtain grammar to generate strings of a’s and b’s such that string length is multiple of three.
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Solution 1

Sure, here is a context-free grammar that generates strings of a's and b's such that the string length is a multiple of three:

  1. S -> aaa | bbb | aSa | bSb | ε

Here is a step-by-step explanation:

  1. The non-terminal symbol S represents a string whose length is a multiple of three.
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