katychuang

# This program sorts input by a specified column
# Author: Katherine Chuang (@katychuang on Github)
# example awk -v column=2 -f prog.awk data.csv
# 
# Program Steps:
# 1. Read input and store items in an array of array. 
# 2. Sort by column specified (user input letter c)
# 3. Print the sorted version

BEGIN {

katychuang

This script and example were prepared to show how to use the awk program to split the BlackBoard download to multiple files. This assumes that you selected format of results = By Question and By User, such that each row represents a single question for a single student. See the csv file as an example.

Downloading from BlackBoard (separate row per question)

Go to Grade Center > Full Grade Center > Navigate to the Assignment or test's Column > Click on the down arrow next to the column's title > Select Download Results. Select 'By Question and User'. This gives you a file named Test.downloading.csv

Splitting into individual files

To run the awk program file you can try the following command.

katychuang

/* Double-ended Linked List with Insert First, Insert Last */

class DoubleEndedLinkedList  {
  private Node first; // private link to the first element
  private Node last;
  
  // constructor sets first to null
  public void DoubleEndedLinkedList(){
    this.first = null;
    this.last = null;

katychuang

/* Simple Linked List with Insert First */
class SimpleLinkedList  {
  private Node first; // private link to the first element
  
  // constructor sets first to null
  public void SimpleLinkedList(){
    this.first = null;
  } 
  
  public boolean isEmpty(){

katychuang

/* Linked List (empty), shows structure of classes and initial members */

class Node  {
   public int value;
   public Node next;  
  
   // Constructor
   public Node(int i) { /* blank for now */ }
  
   // Method

katychuang

double[] a;                   // 1. declare the array with a name

a = new double[n];            // 2. create the array

for (int i = 0; i < n; i++)   // 3. elements are indexed from 0 to n-1
   a[i] = 0.0;                // initialize all elements to 0.0

katychuang

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

katychuang

class Sort {
    private int[] a; // ref to array a
    private int nElems; // number of data items

    public Sort(int max) // constructor
    {
        a = new int[max]; // create the array
        nElems = 0; // no items yet
    }

katychuang

public class Circle {

    private double radius;

    public Circle(double radius) {
        this.radius = radius;
    }

    public double getRadius() {
        return radius;

katychuang

To install nix on OSX10.10, I first followed this [nixos.org wiki guide][1] shared by @boothead, and then found [this guide][3] on setting up a haskell environment with nix. See config.nix file below. I made one change from the tutorial, which is to change ghc783 to ghc784 (line 13).

After creating the file ~/.nixpkgs/config.nix, I skipped the ghc76 stuff and went straight to nix-env -i env-ghc78. It took a bit more than 2 hrs on an 8gb ram MBA for everything to build and link. The end result says

building path(s) ‘/nix/store/6rcj8chl2vim4mry5k7w8gs7nxifxixc-user-environment’
created 51 symlinks in user environment

Then finally: load-env-ghc78 loaded up a shell from which I could ghci