1)首先在导言区加入语句:
\usepackage{algorithm} \usepackage{algorithmic}
2)例1
\begin{algorithm} \caption{A} \label{alg:A} \begin{algorithmic} \STATE {set $r(t)=x(t)$} \REPEAT \STATE set $h(t)=r(t)$ \REPEAT \STATE set $h(t)=r(t)$ \UNTIL{B} \UNTIL{B} \end{algorithmic} \end{algorithm}
排版结果如下:
3)例2
\begin{algorithm} \caption{Calculate $y = x^n$} \label{alg1} \begin{algorithmic} \REQUIRE $n \geq 0 \vee x \neq 0$ \ENSURE $y = x^n$ \STATE $y \Leftarrow 1$ \IF{$n < 0$} \STATE $X \Leftarrow 1 / x$ \STATE $N \Leftarrow -n$ \ELSE \STATE $X \Leftarrow x$ \STATE $N \Leftarrow n$ \ENDIF \WHILE{$N \neq 0$} \IF{$N$ is even} \STATE $X \Leftarrow X \times X$ \STATE $N \Leftarrow N / 2$ \ELSE[$N$ is odd] \STATE $y \Leftarrow y \times X$ \STATE $N \Leftarrow N - 1$ \ENDIF \ENDWHILE \end{algorithmic} \end{algorithm}
排版结果如下:
4)\renewcommand 改变现有命令的定义。在导言区加入如下语句:
\renewcommand{\algorithmicrequire}{ \textbf{Input:}} %Use Input in the format of Algorithm \renewcommand{\algorithmicensure}{ \textbf{Output:}} %UseOutput in the format of Algorithm
使得原来软件包中定义的命令\REQUIRE和\ENSURE显示为Input:和Output:
一个例子如下:
\begin{algorithm}[htb]
\caption{ Framework of ensemble learning for our system.}
\label{alg:Framwork}
\begin{algorithmic}[1] %这个1 表示每一行都显示数字
\REQUIRE ~~\\ %算法的输入参数:Input
The set of positive samples for current batch, $P_n$;\\
The set of unlabelled samples for current batch, $U_n$;\\
Ensemble of classifiers on former batches, $E_{n-1}$;
\ENSURE ~~\\ %算法的输出:Output
Ensemble of classifiers on the current batch, $E_n$;
\STATE Extracting the set of reliable negative and/or positive samples $T_n$ from $U_n$ with help of $P_n$;
\label{ code:fram:extract }%对此行的标记,方便在文中引用算法的某个步骤
\STATE Training ensemble of classifiers $E$ on $T_n \cup P_n$, with help of data in former batches;
\label{code:fram:trainbase}
\STATE $E_n=E_{n-1}\cup E$;
\label{code:fram:add}
\STATE Classifying samples in $U_n-T_n$ by $E_n$;
\label{code:fram:classify}
\STATE Deleting some weak classifiers in $E_n$ so as to keep the capacity of $E_n$;
\label{code:fram:select}
\RETURN $E_n$; %算法的返回值
\end{algorithmic}
\end{algorithm}
排版结果如下:
5)最后一个例子
\begin{algorithm}[h] \caption{An example for format For \& While Loop in Algorithm} \begin{algorithmic}[1] \FOR{each $i \in [1,9]$} \STATE initialize a tree $T_{i}$ with only a leaf (the root);\ \STATE $T=T \cup T_{i};$\ \ENDFOR \FORALL {$c$ such that $c \in RecentMBatch(E_{n-1})$} \label{code:TrainBase:getc} \STATE $T=T \cup PosSample(c)$; \label{code:TrainBase:pos} \ENDFOR \FOR{$i=1$; $i<n$; $i++$ } \STATE $//$ Your source here; \ENDFOR \FOR{$i=1$ to $n$} \STATE $//$ Your source here; \ENDFOR \STATE $//$ Reusing recent base classifiers. \label{code:recentStart} \WHILE {$(|E_n| \leq L_1 )and( D \neq \phi)$} \STATE Selecting the most recent classifier $c_i$ from $D$; \STATE $D=D-c_i$; \STATE $E_n=E_n+c_i$; \ENDWHILE \label{code:recentEnd} \end{algorithmic} \end{algorithm}
排版结果如下: