LaTeX：算法模板
作者：凯鲁嘎吉 - 博客园 http://www.cnblogs.com/kailugaji/
参考一
\documentclass{article}
\usepackage{algorithm}
\usepackage{algorithmic}
\renewcommand{\algorithmicrequire}{ \textbf{Input:}} %Use Input in the format of Algorithm
\renewcommand{\algorithmicensure}{ \textbf{Output:}} %UseOutput in the format of Algorithm
% 参考：https://blog.csdn.net/jzwong/article/details/52399112
\begin{document}
% 例1
\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 $P_n$;
\STATE Training ensemble of classifiers $E$ on $T_n \cup P_n$, with help of data in former batches;
\STATE $E_n=E_{n-1}\cup E$;
\STATE Classifying samples in $U_n-T_n$ by $E_n$;
\STATE Deleting some weak classifiers in $E_n$ so as to keep the capacity of $E_n$;
\RETURN $E_n$; %算法的返回值
\end{algorithmic}
\end{algorithm}
% 例2
\begin{algorithm}
\caption{An example}
\label{alg:2}
\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}
% 例3
\begin{algorithm}
\caption{Calculate $y = x^n$}
\label{alg:3}
\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}
% 例4
\begin{algorithm}[h]
\caption{An example for format For \& While Loop in Algorithm}
\label{alg:4}
\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 $c \in RecentMBatch(E_{n-1})$}
\STATE $T=T \cup PosSample(c)$;
\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.
\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
\end{algorithmic}
\end{algorithm}
\end{document}
结果：
参考二
\documentclass{article}
\usepackage[ruled]{algorithm2e} %算法排版样式1
%\usepackage[ruled,vlined]{algorithm2e} %算法排版样式2
%\usepackage[linesnumbered,boxed]{algorithm2e} %算法排版样式3
% 参考：https://www.cnblogs.com/tsingke/p/5833221.html
\begin{document}
% 例1
\begin{algorithm}[H]
% \SetAlgoNoLine %去掉之前的竖线
\caption{How to write algorithms}
\KwIn{this text}
\KwOut{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; \\
}
}
\end{algorithm}
% 例2
\begin{algorithm}
\SetAlgoNoLine %去掉之前的竖线
\caption{identifyRowContext}
\KwIn{$r_i$, $Backgrd(T_i)$=${T_1,T_2,\ldots ,T_n}$ and similarity threshold $\theta_r$}
\KwOut{$con(r_i)$}
$con(r_i)= \Phi$; \\
\For{$j=1;j \le n;j \ne i$}
{
float $maxSim=0$; \\
$r^{maxSim}=null$; \\
\While{not end of $T_j$}
{
compute Jaro($r_i,r_m$)($r_m\in T_j$); \\
\If{$(Jaro(r_i,r_m) \ge \theta_r)\wedge (Jaro(r_i,r_m)\ge r^{maxSim})$}
{
replace $r^{maxSim}$ with $r_m$; \\
}
}
$con(r_i)=con(r_i)\cup {r^{maxSim}}$; \\
}
return $con(r_i)$; \\
\end{algorithm}
\end{document}
结果：
补充：常用到的分条目
\begin{itemize} \item[1. ] xxx \item[2. ] xxx \end{itemize}
参考文献
[1] latex算法流程图_开飞机的小毛驴儿-CSDN博客_latex 算法流程图
[2] LaTeX 算法代码排版 --latex2e范例总结 - Tsingke - 博客园
[3] 更多LaTeX知识，参考：LaTeX常用链接与资料
