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\chapter{图表，伪代码，公式相关排版}\label{elements}
\section{图的排版}
论文没图谁爱看呀！且看咱导言区不是已经加了``\\graphicspath{{figures/}}''吗？没错，
你要做的就是把你的图放到``figures''文件夹下面。
\subsection{单图}
单图排版很简单。
\begin{figure}[!htb]
\centering
\begin{minipage}[t]{\oneimage}
\centering
\includegraphics[width=\oneimage]{Correct_Ratio}
\end{minipage}
\caption{The ratios between the sizes of $\bm{R}$, $\bm{C}$ and their maximal possible sizes during the attack with three pairs of plain-images,
where $k^*$ denotes the index of the attacking steps.}
\label{fig:ratio}
\end{figure}
\subsection{多图}
多图排版很简单。
\begin{figure}[!htb]
\centering
\begin{minipage}[t]{\twoimage}
\centering
\includegraphics[width=\twoimage]{Lenna}
a)
\end{minipage} \hspace{4pt}
\begin{minipage}[t]{\twoimage}
\centering
\includegraphics[width=\twoimage]{Lenna_e}
b)
\end{minipage}
\caption{A pair of plain-image and the corresponding cipher-image:
a) image ``Lenna''; b) cipher-image of a).}
\label{fig:APairPlaintext}
\end{figure}
\section{表格}
看个例子就好了。
\begin{table}[!htb]
\centering
\caption{Blocking sizes for plain-image of size $256\times 256$.}
\label{tb:blocksize}
\begin{tabular}{c|ccc} \hline
\backslashbox{ $q_1$ }{ $q_2$ } & 0 & 1 & 2 \\ \hline
0 & (8,8) & (8,16) & (8,32) \\
1 & (16,8) & (16,16) & (16,32) \\
2 & (32,8) & (32,16) & (32,32) \\ \hline
\end{tabular}
\end{table}
\section{伪代码}
伪代码排版使用的是这方面最新的包algorithm2e，我们来看看算法\ref{qsort}（更多样例请google``algorithm2e''）：
\begin{algorithm}[H]\label{qsort}
\SetAlgoLined
\KwData{this text}
\KwResult{how to write algorithm with \LaTeX2e }
initialization\;
\While{not at end of this document}{
read current\;
\eIf{understand}{
go to next section\;
current section becomes this one\;
}{
go back to the beginning of current section\;
}
}
\caption{How to write algorithms}
\end{algorithm}
\section{公式排版}
论文没公式的话，难道你在写散文？
已知$a+b=c$，那么
\begin{equation*}\label{eq:aplusb}
a=c-b.
\end{equation*}
来看公式\ref{eq:aplusb}:
\begin{equation}\label{eq:amultib}
a*b=c.
\end{equation}
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