Test

BUBBLE(new Sortable() {
		public <T extends Comparable<T>> void sort(T[] array, boolean ascend) {
			int length = array.length;
			int lastExchangedIdx = 0;
			for (int i = 0; i < length; i++) {
				// mark the flag to identity whether exchange happened to false
				boolean isExchanged = false;
				// last compare and exchange happened before reaching index i
				int currOrderedIdx = lastExchangedIdx > i ? lastExchangedIdx : i;
				for (int j = length - 1; j > currOrderedIdx; j--) {
					int compare = array[j - 1].compareTo(array[j]);
					if (compare != 0 && compare > 0 == ascend) {
						exchange(array, j - 1, j);
						isExchanged = true;
						lastExchangedIdx = j;
					}
				}
				// if no exchange happen means array is already in order
				if (isExchanged == false) {
					break;
				}
			}
		}
	}),