仅禁用文档中某些算法的算法编号

Question

我有以下 MWE

\documentclass[runningheads]{llncs}

\usepackage{algorithm}
\usepackage{algorithmic}

\begin{document}

\begin{algorithm}[H]
\caption{BLAH}
\begin{algorithmic}[1]
\REQUIRE $Input$
\ENSURE $A$.
\STATE Set $A$
\end{algorithmic}
\end{algorithm}

\begin{algorithm}[H]
\renewcommand{\thealgorithm}{}
\floatname{algorithm}{Not an algorithm but want the layout}
\caption{BLEH} 
\begin{algorithmic}[1]
\REQUIRE $Input$
\STATE Compute $B$
\end{algorithmic}
\end{algorithm}

\begin{algorithm}[H]
\caption{BLAH}
\begin{algorithmic}[1]
\REQUIRE $Input$
\STATE Compute $B$
\end{algorithmic}
\end{algorithm}

\end{document}

从而产生了这个第三个实体的标题是算法 3，但我希望它被命名为算法 2。我该如何实现这一点？

编辑我不想使用任何其他算法环境。

Answer 1

走下柜台：

\documentclass{article}

\usepackage{algorithm}
\usepackage{algorithmic}

\newcommand{\altcaption}[1]{%
  \addtocounter{algorithm}{-1}%
  \renewcommand\thealgorithm{\unskip}%
  \floatname{algorithm}{#1}%
  \caption
}

\begin{document}

\begin{algorithm}[H]
\caption{BLAH}
\begin{algorithmic}[1]
\REQUIRE $Input$
\ENSURE $A$.
\STATE Set $A$
\end{algorithmic}
\end{algorithm}

\begin{algorithm}[H]
\altcaption{Not an algorithm but want the layout}{BLEH} 
\begin{algorithmic}[1]
\REQUIRE $Input$
\STATE Compute $B$
\end{algorithmic}
\end{algorithm}

\begin{algorithm}[H]
\caption{BLAH}
\begin{algorithmic}[1]
\REQUIRE $Input$
\STATE Compute $B$
\end{algorithmic}
\end{algorithm}

\end{document}