\documentclass[dvipsnames,14pt,t,xelatex]{beamer}

\usepackage{../slides}

\usepackage{../graphics}

\usepackage{../langs}

%%\usepackage{../data}

\usepackage[export]{adjustbox}

\hfuzz=220pt 

%\setmonofont[Scale=.88]{Consolas}

%\newfontfamily{\consolas}{Consolas}

\lstset{language=Scala,

        style=mystyle,

        numbersep=0pt,

        numbers=none,

        xleftmargin=0mm}

\newcommand{\bl}[1]{\textcolor{blue}{#1}}     

% beamer stuff 

\renewcommand{\slidecaption}{PEP (Scala) 03, King's College London}

\begin{document}

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\begin{frame}[t]

\frametitle{%

  \begin{tabular}{@ {}c@ {}}

  \\[5mm]

  \huge PEP Scala (3) 

  \end{tabular}}

  \normalsize

  \begin{center}

  \begin{tabular}{ll}

    Email:  & christian.urban at kcl.ac.uk\\

    Office: & N7.07 (North Wing, Bush House)\\

    Slides \& Code: & KEATS\medskip\\

    Office Hours: &  \alert{next Monday} 11 -- 12 \& 13 -- 14\\

  \end{tabular}

  \end{center}

\end{frame}

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\begin{frame}[c]

\frametitle{Marks for CW6 (Part 1 + 2)}

Raw marks (234 submissions):

\begin{itemize}

\item 6\%: \hspace{4mm}163 students

\item 5\%: \hspace{4mm}29

\item 4\%: \hspace{4mm}3

\item 3\%: \hspace{4mm}13

\item 2\%: \hspace{4mm}3

\item 1\%: \hspace{4mm}0

\item 0\%: \hspace{4mm}23 

\end{itemize}  

\end{frame}

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\begin{frame}[c,fragile]

\begin{lstlisting}[language=Scala, numbers=none, xleftmargin=-1mm]

def collatz(n: Long) : Long =

  {

    val toReturn = collatzHelper(n, 0)

    toReturn

  } 

\end{lstlisting}

\pause

\bigskip

\rule{11cm}{0.3mm}

\bigskip

\begin{lstlisting}[language=Scala, numbers=none, xleftmargin=-1mm]

def collatz(n: Long) : Long =

  collatzHelper(n, 0)

\end{lstlisting}\pause

\end{frame}

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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\begin{frame}[c,fragile]

\begin{lstlisting}[language=Scala, numbers=none, xleftmargin=-1mm]

def collatz_max(bnd: Long) : (Long,Long) = {val lst = for(a<-(1 to bnd.toInt)) yield (collatz(a),a.toLong);val lst2 = lst.sortBy(_._1);lst2(lst2.length-1)}

\end{lstlisting}\bigskip

\tiny

\begin{lstlisting}[language=Scala, numbers=none, xleftmargin=-1mm]

def collatz_max(bnd: Long) : (Long,Long) = {val lst = for(a<-(1 to bnd.toInt)) yield (collatz(a),a.toLong);val lst2 = lst.sortBy(_._1);lst2(lst2.length-1)}

\end{lstlisting}\pause

\end{frame}

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\begin{frame}[c,fragile]

\small

\begin{lstlisting}[language=Scala, xleftmargin=-4mm,numbers=left]

 def process_ratings(lines: List[String]) = {

    val values = List[(String,String)]()

    for(line <- lines) {

        val splitList = ...

        if(splitList(2).toInt >= 4){

            val userID = splitList(0)

            val movieID = splitList(1)

            val tuple = (userID, movieID)

            tuple :: values

        }

    }

    values

 }

\end{lstlisting}

\normalsize

What does this function (always) return?

\end{frame}

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\begin{frame}[c]

\frametitle{Jumping Towers}

\begin{center}

\begin{tikzpicture}[scale=1.2]

  \draw[line width=1mm,cap=round] (0,0) -- (5,0);

  \draw[line width=1mm,cap=round] (0,1) -- (5,1);

  \draw[line width=1mm,cap=round] (0,0) -- (0,1);

  \node at (0.5,0.5) {\textbf{\Large 3}};

  \draw[line width=1mm,cap=round] (1,0) -- (1,1);

  \node at (1.5,0.5) {\textbf{\Large 4}};

  \draw[line width=1mm,cap=round] (2,0) -- (2,1);

  \node at (2.5,0.5) {\textbf{\Large 2}};

  \draw[line width=1mm,cap=round] (3,0) -- (3,1);

  \node at (3.5,0.5) {\textbf{\Large 0}};

  \draw[line width=1mm,cap=round] (4,0) -- (4,1);

  \node at (4.5,0.5) {\textbf{\Large 1}};

  \draw[line width=1mm,cap=round] (5,0) -- (5,1);

  \draw[->,line width=0.5mm,cap=round,out=90,in=90,relative] (0.5,1) to (1.5,1);

  \draw[->,line width=0.5mm,cap=round,out=90,in=90,relative] (0.5,1) to (2.5,1);

  \draw[->,line width=0.5mm,cap=round,out=90,in=90,relative] (0.5,1) to (3.5,1);

  \draw[->,line width=0.5mm,cap=round,out=-90,in=-90,relative] (2.5,0) to (3.5,0);

  \draw[->,line width=0.5mm,cap=round,out=-90,in=-90,relative] (2.5,0) to (4.5,0);

  \draw[->,line width=0.5mm,cap=round,out=90,in=90,relative] (4.5,1) to (5.7,1);

  \node at (5.7, 0.8) {End};

\end{tikzpicture}

\end{center}\bigskip

shortest: 3 $\rightarrow$ 4 $\rightarrow$ End

\end{frame}

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\begin{frame}[c]

\frametitle{``Children'' / moves}

\begin{center}

  \begin{tikzpicture}

    [grow=right,level distance=30mm,child anchor=north,line width=0.5mm]

  \node {$[3,4,2,0,1]$}

     child {node {$[0,1]$}}

     child {node {$[2,0,1]$}

        child {node {$[1]$} child [level distance=13mm] {node {End}}}

        child {node {$[0,1]$}}

     }

     child {node {$[4,2,0,1]$\ldots}};

\end{tikzpicture}

\end{center}

\end{frame}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\end{document}

\end{document}

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