gcr

# How to install ipython notebook without messing up your entire system.




# Inspect EVERY LINE of this document. Copy+paste in a terminal; don't
# just blindly run it.

gcr

public class Test {
    public static void main(String[] args) {
        float sum = 0;
        long startTime = System.currentTimeMillis();
        for (int i = 0; i<100000000; i++) {
            sum = sum + 0.1f;
        }
        long endTime = System.currentTimeMillis();
        System.out.println("Took "+(endTime-startTime)/1000.0+" sec");

gcr

public class Test {
    public static void main(String[] args) {
        float sum = 0;
        long startTime = System.nanoTime();
        for (int i = 0; i<100000000; i++) {
            sum = sum + 0.1f;
        }
        long endTime = System.nanoTime();
        System.out.println("Took "+(endTime-startTime)/10e9+" sec");

gcr

import smtplib

def send_message(from_addr, password, to_addr, subject, body):
    """
    This function sends an email message through gmail.
       from_addr is your gmail address, like foo@gmail.com
       to_addr   is the recipient's address
       password  should be your gmail password
       subject   is the message subject
       body      is the message body

gcr

public class Circle{
    public void doSomething(){
        System.out.println("Testing");
    }
}
public class Test {
    public static void main(String[] args) {

        final int x = 25;

gcr

public class Circle{
    public void doSomething(){
        System.out.println("Testing");
    }
}
public class Test {
    public static void main(String[] args) {

        Circle c = new Circle() {
                public void doSomething(){

gcr

class Klass(object):
   def __init__(self):
      self.a = 23
   def do_something(self):
      print self.a

class Subklass(Klass):
   def __init__(self):
      self.a = 95

gcr

class Klass(object):
   def do_something(self):
      print "Hello"

class Subklass(Klass):
   def do_something(self):
      print "OVERRIDDEN"


a = Klass()

gcr

public boolean groupSum(int start, int[] nums, int target) {
  // This just calls groupSumSane with no start parameter (boo), an arrayList, and etc.
  ArrayList lst = new ArrayList();
  for (int i = start; i < nums.length; i++) {
    lst.add(nums[i]);
  }
  return groupSumSane(lst, target);
}

public boolean groupSumSane(ArrayList nums, int target) {

gcr

public int strDist(String str, String sub) {
  String x = str;
  if (x.indexOf(sub) == -1) {
    return 0; // Nothing here
  }
  if (!x.startsWith(sub)) {
    // Chop a character off x
    x = x.substring(1);
  }
  if (!x.endsWith(sub)) {