Class EnumArray

The EnumArray class is a specialized array for storing and managing strings as enumerated values. It uses a byte array to store the ordinal values of the strings, which are mapped to their corresponding string values using two data structures: an ArrayList for ordinal-to-string mapping and a HashMap for string-to-ordinal mapping. The class provides methods to add strings to the array, retrieve strings by their index, and manage the internal mappings between strings and their ordinal values. It also includes methods to get the size of the array and the approximate memory size of the object. Key features: - Stores strings as enumerated values using a byte array. - Supports up to 255 unique strings. - Provides methods to add, retrieve, and manage strings in the array. - Ensures consistency between the ordinal-to-string and string-to-ordinal mappings. - Converts null strings to empty strings when adding to the array. Usage: - Use the constructor to initialize the array with a specified number of elements or an array of strings. - Use the addEnum method to add a new string and get its ordinal value. - Use the get method to retrieve a string by its index. - Use the set method to add or update a string at a specific index. - Use the size and sizeBytes methods to get the size of the array and the approximate memory size of the object.