package EkstraSkole;

import java.util.Random;

public class PremieOppgaveFebruar2012 {
    public static void main(String[] args) {
        // Initialize the random and the array
        Random rnd = new Random();
        int[] numbers = new int[60];

        // An int-array is automatically filled with 0's, so just fill in the
        // 1's I need
        for (int i = 20; i < 40; i++) {
            numbers[i] = 1;
        }

        // Infinite loop
        for (;;) {
            // Initialize the counters
            int firstThird = 0, secondThird = 0, thirdThird = 0;

            // Count all the thirds
            for (int i = 0; i < 20; i++) {
                firstThird += numbers[i];
            }

            for (int i = 20; i < 40; i++) {
                secondThird += numbers[i];
            }

            for (int i = 40; i < 60; i++) {
                thirdThird += numbers[i];
            }

            // Print out the bits
            for (int n: numbers) {
                System.out.print(n);
            }

            // Print out the count
            System.out.println(" " + firstThird + " " + secondThird + " "
                    + thirdThird);

            // Where in the array will we move a number from
            int current = rnd.nextInt(60);

            // Move the number back (false) or forward (true)
            boolean backForth = rnd.nextBoolean();

            // Most of the numbers are hard-coded, as it's faster tan using
            // variables
            // The continue's in the nested if's are to restart the loop.
            // Otherwise it might throw an ArrayOutOfBounds (can't be bothered
            // by try/catch)
            if (numbers[current] == 1) {
                if (current == 59) {
                    if (numbers[0] == 0 && backForth) {
                        numbers[0] = 1;
                        numbers[59] = 0;

                        continue;
                    } else if (numbers[58] == 0 && !backForth) {
                        numbers[58] = 1;
                        numbers[59] = 0;

                        continue;
                    }
                } else if (current == 0) {
                    if (numbers[59] == 0 && !backForth) {
                        numbers[59] = 1;
                        numbers[0] = 0;

                        continue;
                    } else if (numbers[1] == 0 && backForth) {
                        numbers[1] = 1;
                        numbers[0] = 0;

                        continue;
                    }
                } else if (numbers[current + 1] == 0 && backForth) {
                    numbers[current] = 0;
                    numbers[current + 1] = 1;
                } else if (numbers[current - 1] == 0 && !backForth) {
                    numbers[current] = 0;
                    numbers[current - 1] = 1;
                }
            }
        }
    }
}