import java.util.ArrayList;
        import java.util.List;

public class AlphabetAssociatedLists {
    //List of String lists that will hold our associated lists
    //Use example: List.get(int index).add(String name)//List.get(getIndex(char c)).add(String name)
    //index is value of equation (for our char from char list named char c) c - 'a'
    //so it's 0 for a and 25 for z
    public static List<List<String>> lists;

    //Constructor, will be called when an object of our class is made with 'new' keywoard
    public AlphabetAssociatedLists() {

        //Fill the main List with empty array lists
        for (int i = 0; i < 26; ++i)
            lists.add(new ArrayList<String>());
    }

    //Gets index by the equation in line 7
    public int getIndex(char c) {
        return (int)c - (int)'a';
    }
}