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+\title{A4: List vs Vector}
+\input{preamble.tex}
+
+I wanted to experiment with co-routine generator for the random
+numbers but discovered the \texttt{std::generator} is not supported
+for my compiler.
+Instead I found what seemed like a similar implementation here:
+\texttt{https://en.cppreference.com/w/cpp/language/coroutines}, which
+I have copied to the \texttt{generator.h} file for use in my program.
+
+I am aware that the random number generator already kind-of works like
+a co-routine generator seen from the outside, so the whole experiment
+is a bit pointless from a software design perspective.
+
+\bigskip
+
+\begin{figure}
+  \includegraphics[scale=0.95]{a4/insert.pdf}
+\end{figure}
+
+\begin{figure}
+  \includegraphics[scale=.95]{a4/remove.pdf}
+\end{figure}
+
+\end{document}