import java.util.ArrayList;
import java.util.Scanner;

/**
 * Sorted Array List
 * Properly this should be generic and handle any data type.  For today, just Strings
 * 
 * @author gtowell
 * Created: Oct 8, 2020
 * Modified: Oct 8, 2020
 */
public class SAL {

   

    /**
     * The underlying arraylist. 
     */
    ArrayList<String> sortedAL;

    /**
     * Default constructor.
     * Just initialize the array list
     */
    public SAL() {
        sortedAL = new ArrayList<>();
    }

    /**
     * Add a String to the sorted array list
     * @param stringToAdd
     */
    public void add(String stringToAdd) {
        int loc = findPlace(stringToAdd);
        insertAtLoc(stringToAdd, loc);
    }

    /**
     * Find the place in the arraylist to put the string
     * @param toAdd the string to be added
     * @return the location in which to put the stirng
     */
    private int findPlace(String toAdd) {
        int place=0;
        while (place<sortedAL.size()) {
            if (toAdd.compareTo(sortedAL.get(place))<0) {
                break;
            }
            place++;
        }
        return place;
    }

    /**
     * Make a place for the new striong and put it there
     * @param toAdd the string to be added
     * @param atLoc the place to add it
     */
    private void insertAtLoc(String toAdd, int atLoc) {
        if (sortedAL.size()==0) {
            sortedAL.add(toAdd);
            return;
        }
        sortedAL.add(sortedAL.get(sortedAL.size()-1));
        for (int ll=sortedAL.size()-2; ll>=atLoc; ll--) {
            sortedAL.set(ll+1, sortedAL.get(ll));
        }
        sortedAL.set(atLoc, toAdd);
    }

    /**
     * Override the default toString method, then use the toString of ArrayList
     */
    public String toString() {
        return sortedAL.toString();
    }

    public static void main(String[] args) {
        SAL sal = new SAL();
        
        Scanner scann = new Scanner(System.in);
        System.out.print("Give me a String: ");
        String lin = scann.nextLine();
        while (!lin.equals("0")) {
            sal.add(lin);
            System.out.print("Give me a String: ");
            lin = scann.nextLine();
        }
        System.out.println("Q");
        System.out.println(sal);
    }

}