latex插入伪代码

常用的排版伪代码包有clrscode, algorithm, algorithmic, algorithmicx, algorithm2e

（1）clrscode
clrscode 是著名的算法教材 Introduction to Algorithms, 2nd ed. 的作者排版该书时自己制定的。由于我非常喜欢其排版，及写伪代码的风格是跟着这本书学的，所以摒弃了常用的算法排版宏包，而用这个。c l r s 分别是该书四个作者的姓的第一个字母，因此人们常以 clrs 指称该书。该包支持显示行号，加入注释，能够每行 label 及引用。

以下是 Insertion-Sort 算法的 code

 1 \begin{codebox}
 2 \Procname{$\proc{Insertion-Sort(A)}$}
 3 \li \For $j \gets 2$ \To $\id{length}[A]$    \label{li:for}
 4 \li     \Do $\id{key} \gets A[j]$            \label{li:for-begin}
 5 \li         \Comment Insert $A[j]$ into the sorted sequence $A[1 \twodots j-1]$.
 6 \li         $i \gets j-1$
 7 \li         \While $i>0$ and $A[i]>\id{key}$ \label{li:while}
 8 \li            \Do $A[i+1] \gets A[i]$       \label{li:while-begin}
 9 \li                $i \gets i-1$             \label{li:while-end}
10                 \End
11 \li         $A[i+1] \gets \id{key}$          \label{li:for-end}
12         \End
13 \end{codebox}

 

（2）algorithmic

 1 \begin{algorithmic}
 2 \REQUIRE $n \geq 0$
 3 \ENSURE $y = x^n$
 4 \STATE $y \Leftarrow 1$
 5 \STATE $X \Leftarrow x$
 6 \STATE $N \Leftarrow n$
 7 \WHILE{$N \neq 0$}
 8 \IF{$N$ is even}
 9 \STATE $X \Leftarrow X \times X$
10 \STATE $N \Leftarrow N / 2$
11 \ELSE[$N$ is odd]
12 \STATE $y \Leftarrow y \times X$
13 \STATE $N \Leftarrow N - 1$
14 \ENDIF
15 \ENDWHILE
16 \end{algorithmic}

 

（3）algorithm

 

[转] http://blog.sina.com.cn/s/blog_6a4b2dea0100m7gf.html

-------------------------------------

 1 \ usepackage { algorithm } 
 2 \ usepackage { algorithmic } 
 3 
 4 
 5 
 6 \begin { algorithm } 
 7 \ caption { Calculate$y = x^n$ } 
 8 \begin { algorithmic } 
 9 \REQUIRE $n\geq 0\vee x\neq 0$ 
10 \ENSURE $y = x^n$ 
11 \STATE $y\leftarrow 1$ 
12 \IF { $n < 0$ } 
13 \STATE $X\leftarrow 1 / x$ 
14 \STATE $N\leftarrow -n$ 
15 \ELSE 
16 \STATE $X\leftarrow x$ 
17 \STATE $N\leftarrow n$ 
18 \ENDIF 
19 \WHILE { $N\neq 0$ } 
20 \IF { $N$ is even } 
21 \STATE $X\leftarrow X\times X$ 
22 \STATE $N\leftarrow N / 2$ 
23 \ELSE [ $N$ is odd ] 
24 \STATE $y\leftarrow y\times X$ 
25 \STATE $N\leftarrow N - 1$ 
26 \ENDIF 
27 \ENDWHILE 
28 \end { algorithmic } 
29 \end { algorithm } Upload

 

Here are useful commands：

Single line statements 

\STATE 

If-statements 

\IF { }  \ENDIF 

\IF {  }  \ELSE  \ENDIF 
\IF {  }  \ELSIF {  }  \ELSE \ENDIF 

For-loops

There are two forms

\FOR {  }  \ENDFOR 
\FORALL {  }  \ENDFOR 

While-loops 

\WHILE { }  \ENDWHILE

Repeat until condition 

\REPEAT \UNTIL {  }

Infinite loops 

\LOOP \ENDLOOP

Precondition 

\REQUIRE 

Postcondition 

\ENSURE

Returning variables 

\RETURN 

Printing variables 

\PRINT

 

Note: Due to a bug, the algorithmic package is not compatible with hyperref.

 

[转]http://www.math-linux.com/spip.php?article129