EECS 2011: Fundamentals of Data Structures (Winter 2019)

(Comparable<? super E>)

		StringBuffer sb = new StringBuffer();
                sb.append("SkipList of height: " + listHeight + " Size: "+ size +"\n");
                for (Node node = head; node != null; node = node.down){
                        for (Node node2 = node; node2 != null; node2 = node2.forward)
                                sb.append("(" + node2.item + ")-" + node2.distance + "- ");
                        sb.append("\n");
                }
                return sb.toString();
		

		submit 2011N a1 file1 file2 file2
		

java ListTester 

java ListTester > file

// Example 1
try{
	randomAccessFile = new RandomAccessFile(fileName, "rw");
	randomAccessFile.setLength(0); //if you want to erase the file before you continue
	}catch (FileNotFoundException x) {
		System.err.println(x);
	}catch (IOException x) {
		System.err.println(x);
}
...
try{
	randomAccessFile.writeBytes(Long.toHexString(Double.doubleToLongBits((Double)e)));
}catch (IOException x) {
	System.err.println(x);
}
//WARNING: You might want to close the file at some point.


//Example 2
try {
	Files.write(Paths.get(fileName), 
		(Long.toHexString((Double.doubleToLongBits((Double)e)))).getBytes(), 
		StandardOpenOption.CREATE, StandardOpenOption.APPEND);
}catch (IOException x) {
	System.err.println(x);
}


//Example 3
file = new File(fileName);
...
PrintWriter out = null;
try
{	out = new PrintWriter(new FileOutputStream(file,true)); //true if you want to APPEND to an existing file
    	out.println(Long.toHexString((Double.doubleToLongBits((Double)e))));
} catch (IOException x) {
	System.err.println(x);
} finally{
	if (out != null) out.close();
}

//e.g., when implementing toString()
file = new File(fileName);
...
try {
      	reader = new Scanner(file);
      	while (reader.hasNextLine()){
		...
		doubleValue = Double.longBitsToDouble(Long.parseUnsignedLong(reader.nextLine(),16)));
		...
	}
} catch (FileNotFoundException x) {
       	System.err.println(x);
} finally{
	if (reader != null) reader.close();
}