In JAVA, Write a Class Zoo, that contains

• Data members:

  • animals
    • a collection of animals, the number is NOT FIXED, you can add a new animal or remove one from it.

• Methods:

  • Default constructor

  • Constructor with all data members

  • Copy constructor

  • int countAnimals(String type)

    • count in the zoo, how many animals belong to a certain type

  • void updateValidTypes()

    • go through all animals in the zoo and check if there is a valid type in the ArrayList from which no animals in the zoo belong to that type. If so, remove the type from the valid type ArrayList.

  • boolean isGenderBalanced(String type)

    • check if, for a specific type, the difference between the number of female and number of male is less than 20% of the total number of animals of that type.

  • void removeOldest(String type)

    • first check if the type is valid or not, if it is valid, then remove the oldest animal(s) of a certain type from the animals (if two animals have the same age, remove both), it calls updateValidTypes() in the end.

  • equals()

  • toString()