/*
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 */
package com.calebfontenot.mp5_calebfontenot;

import java.util.Scanner;

/**
 *
 * @author caleb
 */
public class MP5_CalebFontenot {
    // Toggles execution of the printArray method.
    static final boolean debug = false;

    public static void printArray(boolean[] array) {
        // Color codes
        final String ANSI_RED = "\u001B[31m";
        final String ANSI_GREEN = "\u001B[32m";
        final String ANSI_WHITE = "\u001B[37m";

        // Print the array
        for (int i = 0; i <= array.length - 1; i++) {
            if (array[i]) {
                System.out.print(ANSI_GREEN + array[i] + " ");
            } else {
                System.out.print(ANSI_RED + array[i] + " ");
            }
            if (i != 0) {
                if ((i + 1) % 10 == 0) {
                    System.out.println(ANSI_WHITE);
                }
            }
        }
    }

    public static void solveAndPrint(boolean[] array, int studentCount) {
        for (int student = 1; student <= studentCount; student++) {
            if (debug) {
                System.out.println("Student " + student + " is interacting with the lockers!");
            }
            for (int i = 0; i <= array.length - 1; i++) {
                if ((i + 1) % student == 0) {
                    array[i] = !array[i];
                }
            }
            if (debug) {
                printArray(array);
            }
        }
        for (int i = 0; i < array.length; i++) {
            if (array[i]) {
                System.out.println("Locker " + (i + 1) + " is open.");
            }
        }
    }

    public static int menu() {
        // Create scanner
        Scanner input = new Scanner(System.in);
        int userInput;
        do {
            System.out.print("Enter 0 to quit, and 1 to enter the number of students: ");
            userInput = input.nextInt();
            if (userInput == 1) {
                System.out.print("Enter the number of students: ");
                userInput = input.nextInt();
                break;
            }

        } while (userInput != 0);
        return userInput;
    }

    public static void main(String[] args) {
        final int N = menu();
        boolean[] lockers = new boolean[N];
        // Execute solve and print
        solveAndPrint(lockers, N);

    }
}