BubbleSort in C++

BubbleSort

static void Swap(int& x, int& y) {
		int swap = x;
		x = y;
		y = swap;
	}

static void BubbleSort(int arr[], int length) {
		for (int i = 0; i < length - 1; i++) {
			for (int l = i + 1; l < length; l++) {
				if (arr[i] < arr[l]) {
					Swap(arr[i], arr[l]);
				}
			}
		}
	}