public void bubbleSort() {
    int temp;
    int out;
    int outNew = 0;
    int in;

    for (out = nElems - 1; out > 0; out--) {

        for (in = 0; in < out; in++) {

            if (a[in] > a[in + 1]) {
                temp = a[in + 1];
                a[in + 1] = a[in];
                a[in] = temp;
            }
        }

        for (int j = in - 1; j > outNew; j--) {

            if (a[j] < a[j - 1]) {
                temp = a[j];
                a[j] = a[j - 1];
                a[j - 1] = temp;
            }

        }

        outNew++;

    }

}