extras

{
    Double [] [] p = (Double [] []) (new Double [numPoints] [dim]);
    int i = 0;
    while (i < numPoints) {
        labeled : {
            ((Double [] []) p) [i] = (Double []) (new Double [dim]);
            int j = 0;
            while (j < dim) {
                labeled : {
                    ((Double []) ((Double [] []) p) [i]) [j] = Double.valueOf (Math.random ());
                    j ++;
                }}
            i ++;
        }}
    return (Double [] []) p;
}

{
    int i;
    int j;
    i = 0;
    while (i < rows) {
        labeled : {
            j = 0;
            while (j < cols) {
                labeled : {
                    ((Integer []) ((Integer [] []) pts) [i]) [j] = Integer.valueOf (rand () % grid_size);
                    j ++;
                }}
            i ++;
        }}
}

{
    int i;
    Integer [] [] matrix;
    Integer [] [] cov;
    int [] mean;
    matrix = (Integer [] []) (new Integer [] [] {(Integer []) (new Integer [] {Integer.valueOf (1), Integer.valueOf (5), Integer.valueOf (3)}), (Integer []) (new Integer [] {Integer.valueOf (3), Integer.valueOf (4), Integer.valueOf (2)}), (Integer []) (new Integer [] {Integer.valueOf (11), Integer.valueOf (2), Integer.valueOf (4)})});
    mean = (int []) (new int [num_rows]);
    cov = (Integer [] []) (new Integer [num_rows] []);
    i = 0;
    while (i < num_rows) {
        labeled : {
            ((Integer [] []) cov) [i] = (Integer []) (new Integer [num_rows]);
            i ++;
        }}
    calc_cov ((Integer [] []) matrix, (int []) mean, (Integer [] []) cov);
    dump_points ((Integer [] []) cov, num_rows, num_rows);
    return;
}