public class Grid {

    public static void main(String[] args) {

        // ----------------------------------------------------
        // TODO: Check for at least two command line arguments.
        // If not provided, print a usage statement and return.
        // ----------------------------------------------------



        // ----------------------------------------------------
        // TODO: Parse command line arguments into two integers.
        // These will represent rows and columns.
        // ----------------------------------------------------



        // ----------------------------------------------------
        // TODO: Declare and create a rectangular 2D int array.
        // ----------------------------------------------------
        int[][] grid;



        // ----------------------------------------------------
        // TODO: Fill the rectangular grid with random integers.
        // ----------------------------------------------------



        // ----------------------------------------------------
        // TODO: Create a non-rectangular (jagged) 2D array.
        // Each row should have a different length.
        // ----------------------------------------------------
        int[][] grid2;



        // ----------------------------------------------------
        // TODO: Fill the non-rectangular grid with random ints.
        // ----------------------------------------------------



        // ----------------------------------------------------
        // TODO: Print both grids using a helper method.
        // ----------------------------------------------------



        // ----------------------------------------------------
        // Provided equality demo setup (DO NOT MODIFY)
        // ----------------------------------------------------
        int[][] arr1 = new int[2][2];
        int[][] arr2 = new int[2][2];
        int[][] arr3;

        for (int i = 0; i < 2; i++) {
            for (int j = 0; j < 2; j++) {
                arr1[i][j] = i + j;
                arr2[i][j] = i + j;
            }
        }
        arr3 = arr1;


        // ----------------------------------------------------
        // TODO: Print results of == comparisons.
        // ----------------------------------------------------



        // ----------------------------------------------------
        // TODO: Test your gridEquals method.
        // ----------------------------------------------------



        // ----------------------------------------------------
        // TODO (Optional): Transpose the rectangular grid and
        // print the result.
        // ----------------------------------------------------
    }


    // --------------------------------------------------------
    // TODO:
    // Write a method that prints a 2D array using nested loops.
    // --------------------------------------------------------
    public static void printGrid(int[][] arr) {

    }


    // --------------------------------------------------------
    // TODO:
    // Return true if two 2D arrays contain identical values.
    // --------------------------------------------------------
    public static boolean gridEquals(int[][] arr1, int[][] arr2) {

        return false;
    }


    // --------------------------------------------------------
    // TODO (Optional):
    // Return the transpose of a rectangular grid.
    // --------------------------------------------------------
    public static int[][] transpose(int[][] arr) {

        return null;
    }
}