Assume that you are tasked with the job of writing a context-free grammar for Java variable declarations. We shall limit the data types to be either int or int[], i. e. integer type or array of integer types. We shall assume that variables begin with a lower-case letter and may be followed by zero or more lower-case letters or digits. We shall also assume that integer constants are written with an optional sign (+ or -) and followed by a string of digits without leading zeroes. Required:
Write a Context-Free Grammar for strings that denote one declaration of variables of either integers or array of integers.