\documentclass[11pt]{scrartcl}

\usepackage{amsmath}
\usepackage[utf8x]{inputenc}
\usepackage[ngerman]{babel}
\usepackage[babel,german=quotes]{csquotes}
\usepackage{wrapfig}
\usepackage{graphicx}
\usepackage{url}

\title{Hello, Stuff!}
\author{}
\date{}

\newcommand{\POPSTARS}{\ensuremath{\text{sPOP}^{\ast}}}
\newcommand{\LMPO}{\ensuremath{\text{LMPO}}}
\newcommand{\POPSTAR}{\ensuremath{\text{POP}^{\ast}}}
\newcommand{\TOP}{\rule{0pt}{3ex}} % TOP SPACE IN TABLE
\newcommand{\BOT}{\rule[-1.8ex]{0pt}{0pt}} % BOTTOM SPACE IN TABLE 
\newcommand{\MPO}{\ensuremath{\text{MPO}}}
\DeclareMathOperator{\bigO}{\mathsf{O}}

\newcommand{\tm}[1]{\bf{\tiny{$\backslash$#1}}}
\renewcommand{\c}[2]{{\small{#2}}}
\newcommand{\spc}{@{\hspace{1.8mm}}}

\begin{document}

%\maketitle

\begin{enumerate}

\item Setzen Sie den folgenden Absatz:

\begin{tabular}{@{}l@{\quad}l@{}}
\begin{minipage}[t]{.5\linewidth}
{\small  
\begin{verbatim}
\begin{align*}
y_1 & = x^2 
\\
y_2 &= 2x 
\\
y_3 &= q
\end{align*}
\end{verbatim}
}
\end{minipage}
&
\begin{minipage}[t]{.4\linewidth}
  $$\begin{aligned}
    y_1 & = x^2 
    \\
    y_2 &= 2x 
    \\
    y_3 &= q
    \notag
  \end{aligned}$$
  \end{minipage} 
\end{tabular}    


\item Setzen Sie die Abbildung~\ref{tbl:exp1}.

\begin{figure}
\centering
   \begin{tabular}{l @{\hspace{5pt}}r@{}l@{\hspace{3pt}}r@{}l
       @{\hspace{3pt}}r@{}l@{\hspace{3pt}}r@{}l@{\hspace{3pt}}}
    \hline
    \TOP
    bound
    & \multicolumn{2}{r}{\MPO} 
    & \multicolumn{2}{r}{\LMPO}
    & \multicolumn{2}{r}{\POPSTAR}
    & \multicolumn{2}{r}{\POPSTARS}
    \BOT
    \\
    \hline
    \TOP
    $\bigO(1)$ 
    &  & %\tm{0.00} %MPO
    &  & %\tm{0.00} %LMPO
    &  & %\tm{0.00} %POPSTAR
    & \c{9}{9} & \tm{0.06} %POPSTARS
    \\
    $\bigO(n^1)$ 
    &  & %\tm{0.00} %MPO
    &  & %\tm{0.00} %LMPO
    &  & %\tm{0.00} %POPSTAR
    & \c{23}{32} & \tm{0.07} %POPSTARS
    \\
    $\bigO(n^2)$ 
    &  & %\tm{0.00} %MPO
    &  & %\tm{0.00} %LMPO
    &  & %\tm{0.00} %POPSTAR
    & \c{6}{38} & \tm{0.09} %POPSTARS
    \\
    $\bigO(n^3)$ 
    &  & %\tm{0.00} %MPO
    &  & %\tm{0.00} %LMPO
    &  & %\tm{0.00} %POPSTAR
    & \c{1}{39} & \tm{0.20} %POPSTARS
    \\
    $\bigO(n^k)$ 
    &  & %\tm{0.00} %MPO
    &  & %\tm{0.00} %LMPO
    & \c{43}{43} & \tm{0.05} %POPSTAR
    & \c{1}{39} & \tm{0.20} %POPSTARS
    \\
    \TOP 
    \textsf{yes}
    & \c{76}{76} & \tm{0.09} %MPO
    & \c{57}{57} & \tm{0.05} %LMPO
    & \c{43}{43} & \tm{0.05} %POPSTAR
    & \c{39}{39} & \tm{0.07} %POPSTARS
    \\
    \BOT \textsf{maybe}
    & \c{681}{681} & \tm{0.16} %MPO
    & \c{700}{700} & \tm{0.11} %LMPO
    & \c{714}{714} & \tm{0.11} %POPSTAR
    & \c{718}{718} & \tm{0.11} %POPSTARS
    \\
    \hline
  \end{tabular}
  \caption{Number of oriented problems and average execution time in seconds.}
  \label{tbl:exp1}
\end{figure}

Wobei Sie den unten stehenden Source verwenden können.
\end{enumerate}

\paragraph{Source}

{\small
\begin{verbatim}
\newcommand{\POPSTARS}{\ensuremath{\text{sPOP}^{\ast}}}
\newcommand{\LMPO}{\ensuremath{\text{LMPO}}}
\newcommand{\POPSTAR}{\ensuremath{\text{POP}^{\ast}}}
\newcommand{\TOP}{\rule{0pt}{3ex}} 
\newcommand{\BOT}{\rule[-1.8ex]{0pt}{0pt}} 
\newcommand{\MPO}{\ensuremath{\text{MPO}}}
\DeclareMathOperator{\bigO}{\mathsf{O}}


\end{verbatim}
}

% \paragraph{Textwidth}

% \mbox{}

% \noindent
% \fbox{%
% \begin{minipage}{1.0\linewidth}
% the text width is \the\linewidth
% \end{minipage}
% }

\end{document}