LaTeX如何插入算法

1、首先引入几个需要用到的包

\usepackage{algorithm} %format of the algorithm 

\usepackage{algorithmic} %format of the algorithm 

\usepackage{multirow} %multirow for format of table 

\usepackage{amsmath} 

\usepackage{xcolor}

2、重新定义require和ensure命令对应的关键字(此处将默认的Require/Ensure自定义为Input/Output)

3、\renewcommand{\algorithmicrequire}{\textbf{Input:}} 

\renewcommand{\algorithmicensure}{\textbf{Output:}}

4、分析一下示例：

\begin{algorithm} %算法开始 

\caption{Sample algorithm} %算法的题目 

\label{alg1} %算法的标签 

\begin{algorithmic}[1] %此处的[1]控制一下算法中的每句前面都有标号 

\REQUIRE Text:Today is a good day. Variables:$u,v,w$. $G=(V,E)$ %输入条件(此处的REQUIRE默认关键字为Require，在上面已自定义为Input) 

5、\ENSURE Something... %输出结果(此处的ENSURE默认关键字为Ensure在上面已自定义为Output) 

% if-then-else 

\IF{some condition is true} 

\STATE do some processing 

\ELSIF{some other condition is true} 

\STATE do some different processing 

\ELSE 

\STATE do the default actions 

\ENDIF 

% for loop 

\FOR{$i=0$ to $10$} 

\STATE carry out some processing 

6、\ENDFOR 

\FORALL{$i$ such that $0\leq i\leq 10$} 

\STATE carry out some processing 

\ENDFOR 

% while-loop 

\WHILE{some condition holds} 

\STATE carry out some processing 

\ENDWHILE 

% repeat-until loop 

\REPEAT 

\STATE carry out some processing 

\UNTIL{some condition is met} 

% infinite loop 

\LOOP 

\STATE this processing will be repeated forever 

\ENDLOOP

\end{algorithmic} 

\end{algorithm}