jmhertlein

//assume we're looking for x.

bool found = false;
Node* temp = head, rm = NULL;

//now we loop through our list looking for a node that holds something == to x
while(temp != null && !found) {
  if(temp->data == x) { //if we find it, set found to true and rm to the node
    found = true;
    rm = temp;

jmhertlein

//let's say we're replacing this:

public MyChatListener extends ChatListener {
    public void onPlayerChat(PlayerChatEvent event) {
        //do something
    }
}

//We'll change it to this:

jmhertlein

var remainingTime := 5

procedure run()
    if(remainingTime <= 0) then
        Bukkit.shutdown()
    else 
        print("Halt in " + remainingTime)
        remainingTime--
end
    

jmhertlein

buildMaxHeap(data)
	//Precondition: data is an ordered set that contains n elements
	data.heapSize = data.length
	//Loop invariant: the trees rooted at indices in the range [i,n] are max-heaps
	for i=FLOOR(data.length/2) downto 1
		maxHeapify(data, I)
	//Postcondition: data[1] is the root of a tree that is a max-heap

mergeSort(data)
	//Precondition: data is an ordered set of n elements

jmhertlein

//Precondition: A is a list of elements, sorted in increasing order
//              P is the root of the binary tree to be created

//Postcondition: P is the root of a binary tree containing all elements in A

procedure mktree(list A, node P)
  if A is empty,
    return

  middle = A.length/2

jmhertlein

Server has client's public key already, in a list of trusted public keys
keys are RSA key pairs

client connects
server sends its pubkey
client now using server's pubkey to encrypt all outgoing communications, incoming are still unencrypted
client sends username it wants to authenticate as
server loads trusted pubkey for username
encrypts n securely-randomly-generated bytes, sends over unencrypted connection to client
client uses private key to decrypt

jmhertlein

    private void deleteTown(ObjectOutputStream oos, ObjectInputStream ois) throws IOException, ClassNotFoundException {
        //receive arguments over socket
        final String townName = (String) ois.readObject();
        final FutureBoolean result = new FutureBoolean();
        
        final Object callback = this;
        
        //prepare a Runnable object to delete the town from the server's main thread
        Runnable r = new Runnable() {
            @Override

jmhertlein

client connects to server
<authentication happens>
client writes a RemoteAction enum to signal what it wants to do (ADD_PLAYER, REMOVE_PLAYER, etc)
server reads enum, uses a big switch-case to direct flow to appropriate method
in the appropriate method, server reads in "arguments" for action one by one, as client sends them
server executes the action once it has all its input
server communicates back exit status

jmhertlein

import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JFrame;
import javax.swing.SwingWorker;

public class MuhJFrame extends JFrame {
    private SwingWorker gameLooper;
    private boolean stop;
    
    private int seconds;

jmhertlein

/*
 * Copyright (C) 2013 everdras@gmail.com
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of