Bubble Sort

No one uses it any more

static void bubbleSort(int[] arr, int n) {
    if (n == 1) {
        return;
    }

    IntStream.range(0, n - 1).forEach(i -> {
        int j = i + 1;
        if (arr[i] > arr[j]) {
            int tmp = arr[i];
            arr[i] = arr[j];
            arr[j] = tmp;
        }
    });

    bubbleSort(arr, n - 1);
}