Janne Mareike Koschinski justjanne

## Aufgabe 1
Aufgabe 1 (a)
=============

> Wie kann man einen Addierer als Subtrahierer verwenden?

Ein Addierer kann als Subtrahierer verwendet werden, indem  das zweite Argument
negiert wird.
$a - b = a + (-b)$

Im Zweierkomplement können wir eine Zahl negieren, indem wir alle ihre Bits

## CoreConnService.java
    /**
     * Handler of incoming messages from CoreConnection, since it's in another
     * read thread.
     */
    class IncomingHandler extends Handler {
        public boolean disabled = false;

        @Override
        public void handleMessage(android.os.Message msg) {
            if (msg == null || coreConn == null || disabled) {

## gist:b6e53dd9559660df9c92
/*
    * The addIrcUser function in the Network class is called whenever a new
    * IRC user appears on a given network.
    */
} else if (className.equals("Network")) {
    switch(function) {
        case "addIrcUser":
            String nick = (String) packedFunc.remove(0).getData();
            IrcUser user = new IrcUser();
            user.nick = nick.split("!")[0];

## Merge-Sort
; Takes two sorted lists
; Returns a sorted list with all elements from the first 2 lists
; (Works like the set union from a previous series)
(: merge-lists ((list-of number) (list-of number) -> (list-of number)))
(define merge-lists
  (lambda (xs ys)
    (cond
      [(empty? xs) ys]
      [(empty? ys) xs]
      [(< (first xs) (first ys))

## gist:9916857
<!DOCTYPE html>
<meta charset="utf-8">

<style>
    body {
      text-align: center;
      background: #7c7c7c;
    }

    .block {
	Aufgabe 1 (a)
	=============

	> Wie kann man einen Addierer als Subtrahierer verwenden?

	Ein Addierer kann als Subtrahierer verwendet werden, indem das zweite Argument
	negiert wird.
	$a - b = a + (-b)$

	Im Zweierkomplement können wir eine Zahl negieren, indem wir alle ihre Bits
	/**
	* Handler of incoming messages from CoreConnection, since it's in another
	* read thread.
	*/
	class IncomingHandler extends Handler {
	public boolean disabled = false;

	@Override
	public void handleMessage(android.os.Message msg) {
	if (msg == null \|\| coreConn == null \|\| disabled) {
	/*
	* The addIrcUser function in the Network class is called whenever a new
	* IRC user appears on a given network.
	*/
	} else if (className.equals("Network")) {
	switch(function) {
	case "addIrcUser":
	String nick = (String) packedFunc.remove(0).getData();
	IrcUser user = new IrcUser();
	user.nick = nick.split("!")[0];
	; Takes two sorted lists
	; Returns a sorted list with all elements from the first 2 lists
	; (Works like the set union from a previous series)
	(: merge-lists ((list-of number) (list-of number) -> (list-of number)))
	(define merge-lists
	(lambda (xs ys)
	(cond
	[(empty? xs) ys]
	[(empty? ys) xs]
	[(< (first xs) (first ys))
	<!DOCTYPE html>
	<meta charset="utf-8">

	<style>
	body {
	text-align: center;
	background: #7c7c7c;
	}

	.block {