b-tree-2-small.tex

\documentclass{article}
\usepackage[pdftex,active,tightpage]{preview}
\setlength\PreviewBorder{2mm}

\usepackage{tikz}
\usetikzlibrary{calc,shapes.multipart,chains,arrows,positioning}

\tikzset{
    font=\tt,
    >= stealth,
    every picture/.style={thick},
    pointer/.style={*->},
    node/.style={
        align=center,
        rectangle split, rectangle split horizontal,
        rectangle split parts=#1,
        draw,
        anchor=center,
        rectangle split part align={center},
        rectangle split empty part width=1.5,
        rectangle split part fill = {white}
    }
}

\begin{document}
\begin{preview}
\begin{tikzpicture}
    \node[align=center, draw, fill=yellow] at (3,3){
        \tikz \node[node=5] (A) {
            \nodepart{one}
            \nodepart{two}7
            \nodepart{three}
            \nodepart{four}11
            \nodepart{five}
        };
    };

    \node[align=center, draw, fill=yellow] at (0,0){
        \tikz \node[node=5] (B) {
            \nodepart{one}
            \nodepart{two}1
            \nodepart{three}
            \nodepart{four}4
            \nodepart{five}
        };
    };

    \node[align=center, draw, fill=yellow] at (3,0){
        \tikz \node[node=5] (C) {
            \nodepart{one}
            \nodepart{two}4
            \nodepart{three}
            \nodepart{four}8
            \nodepart{five}
        };
    };

    \node[align=center, draw, fill=yellow] at (6.2,0){
        \tikz \node[node=5] (D) {
            \nodepart{one}
            \nodepart{two}14
            \nodepart{three}
            \nodepart{four}15
            \nodepart{five}
        };
    };

    \draw[pointer] (1.9, 3.1) -- ($(B)+(0,0.4)$) node[] {};
    \draw[pointer] (2.8, 3.1) -- ($(B)+(2.8,0.4)$) node[] {};
    \draw[pointer] (3.9, 3.1) -- ($(B)+(6,0.4)$) node[] {};
\end{tikzpicture}
\end{preview}
\end{document}