class RaggedArray {

    /*
     * This program demonstrates how to declare, allocate memory, and set
     * values of a 2D ragged array.
     */
    public static void main(String[] args) {
        int[][] a = new int[10][];

        for (int i = 0; i < a.length; i++)
            a[i] = new int[i+1];

        for (int i = 0; i < a.length; i++)
            for (int j = 0; j < a[i].length; j++)
                a[i][j] = i+j;

        for (int i = 0; i < a.length; i++) {
            for (int j = 0; j < a[i].length; j++)
                System.out.print(a[i][j] + " ");
            System.out.println();
        }
    }

}