ToDos.java

import java.util.ArrayList;

    class ToDos {

        public static void main(String[] args) {

            // Sherlock
            ArrayList<String> sherlocksToDos = new ArrayList<String>();

            sherlocksToDos.add("visit the crime scene");
            sherlocksToDos.add("play violin");
            sherlocksToDos.add("interview suspects");
            sherlocksToDos.add("solve the case");
            sherlocksToDos.add("apprehend the criminal");

            // Poirot
            ArrayList<String> poirotsToDos = new ArrayList<String>();

            poirotsToDos.add("visit the crime scene");
            poirotsToDos.add("interview suspects");
            poirotsToDos.add("let the little grey cells do their work");
            poirotsToDos.add("trim mustache");
            poirotsToDos.add("call all suspects together");
            poirotsToDos.add("reveal the truth of the crime");

            // Print the size of each ArrayList below:
            int sherlocksToDosSize = sherlocksToDos.size();
            int poirotsToDosSize = poirotsToDos.size();

            System.out.println("Sherlock's amount of to dos: "+ sherlocksToDosSize);
            System.out.println("Poirot's amount of to dos: "+ poirotsToDosSize);

            // Print the name of the detective with the larger to-do list:
            if (sherlocksToDosSize > poirotsToDosSize) {
                System.out.println("Sherlock");
            } else {
                System.out.println("Poirot");
            }
    }
}