// This file stores some of the examples we coded in DrJava in class.

import java.util.*;   // for Arrays.toString

public class DrJavaExamples {
    public static void main(String[] args) {
        // prints array elements
        int[] list = {};
        System.out.print(list[0]);
        for (int i = 1; i < list.length; i++) {
            System.out.print(", " + list[i]);
        }   
        System.out.println();
        
        
        // vote-counting example (see below for another version)
        // string stores voters' votes
        // (R)epublican, (D)emocrat, (I)ndependent
        String votes = "RDRDRRIDRRRDDDDIRRRDRRRDIDIDDRDDRRDRDIDD";
        int[] counts = new int[3];   // R -> 0, D -> 1, I -> 2
        
        for (int i = 0; i < votes.length(); i++) {
            char c = votes.charAt(i);
            if (c == 'R') {
                counts[0]++;
            } else if (c == 'D') {
                counts[1]++;
            } else { // c == 'I'
                counts[2]++;
            }
        }
        System.out.println(Arrays.toString(counts));  // [17, 18, 5]
    }
}

/*
Another version of the vote-counting loop that doesn't need if/else:
        //                012
        String parties = "RDI";
        for (int i = 0; i < votes.length(); i++) {
            char c = votes.charAt(i);        // c == 'I'
            int index = parties.indexOf(c);  // index == 2
            counts[index]++;
        }
*/