constructor

Graph(String input1, String input2){
    	nodeList = new ArrayList<Node>();
	try{
		/* file I/O part
		   you open the node_info.txt, edge_info.txt files in java
		   read the input data line by line, and separate line by split() function.
		   allocate memory to each Node. input data is from node_info.txt
		   allocate memory to each Node's adjList. input data is from edge_info.txt
		   Notice: Be careful if you put data in variable with right data structure.
		   Example) 
		   		HashMap<Integer, Integer> a = new HashMap<Integer, Integer>();
		   		a.put(1,"1");   --> wrong!
				The second value seems to be integer, but actually it is String.
				You should use parse function to convert String to int.
		*/
		//TODO: Construction of Graph
		//I made <Start>
		File file1 = new File(input1);
		FileReader fr1 = new FileReader(file1);
		BufferedReader br1 = new BufferedReader(fr1);
		String line1;
		while((line1 = br1.readLine()) != null){
			String[] str1 = line1.split("\t");
			String nodeName = str1[1];//Column2 is distict name 
			int nodeId = Integer.parseInt(str1[0]);//Column1 is node ID
			Node n = new Node(nodeName,nodeId);//To create nodes(0~24)
			nodeList.add(nodeId,n);//Add created nodes to 'nodeList'
		}
		File file2 = new File(input2);
		FileReader fr2 = new FileReader(file2);
		BufferedReader br2 = new BufferedReader(fr2);
		String line2;
		while((line2 = br2.readLine()) != null){
			String[] str2 = line2.split("\t");
			Node node1 = nodeList.get( Integer.parseInt(str2[0]) );
			Node node2 = nodeList.get( Integer.parseInt(str2[1]) );
			double dist = Double.parseDouble(str2[2]);
			node1.adjList.put(node2.id,dist);
			node2.adjList.put(node1.id,dist);
		}
		//I made <End>
		}catch(IOException e){}
	}