\documentclass[11pt,a4paper]{article}
\usepackage[margin=2.5cm]{geometry}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{lmodern}
\usepackage{hyperref}

\title{Data Structures and Algorithms\\Assignment 6 -- Answer Sheet}
\author{First name Last name\\Matriculation number:}
\date{}

\begin{document}
\maketitle

\section*{Exercise 1: Runtime complexity}
\subsection*{a)}
Write your answer here.

\subsection*{b)}
Write your answer here.

\section*{Exercise 2: Priority Queue}
\subsection*{a)}
Write your answer here.

\subsection*{b)}
Write your answer here.

\subsection*{c)}
\begin{center}
\small
\begin{tabular}{|c|*{16}{c|}}
\hline
Index & 0 & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 & 10 & 11 & 12 & 13 & 14 & 15 \\
\hline
Heap & & & & & & & & & & & & & & & & \\
\hline
\end{tabular}
\end{center}

Brief explanation:

\section*{Exercise 3: Quicksort}
\subsection*{a)}
Write your answer here.

\subsection*{b)}
Write your answer here.

\end{document}
