1) Give a recursive definition for the language STRANGE which is defined over the alphabet Σ = {a, b} and contains words that have an even number of b’s and an odd number of a’s. 2) Consider the following recursive definition of 4-PERMUTATION: Rule 1: 4321 is a 4-PERMUTATION. Rule 2: If wxyz is a 4-PERMUTATION, then so are zxyw and yxzw. Rule 3: no other words belong to 4-PERMUTATION. Give all the words in the language 4-PERMUTATION.

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Q: not use ai please

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Declaring and Defining the function

A set of statements, which performs a particular task is called a function. The program gains modularity by using function. The application is quite easy to understand, read, and edit when they are created with functions. The developer/programmer creates a function and uses main() to call the function. Once the function gets executed, the control is transferred to the main program.