public void initialGraphic(String[][] metrix) {

		int number = metrix.length;

		nodes = new Node[number];
		for (int i = 0; i < number; i++) {
			nodes[i] = new Node();
			nodes[i].setNodeId(String.valueOf(i + 1));
			nodes[i].setVisited(false);
			nodes[i].setNextNode(null);
		}
	}