algorithm2e中的彩色边框

Question

我正在尝试在laTeX中的algorithm2e环境周围更改框的颜色。下面的代码为我提供了我想要的算法样式，但是在它周围有一个黑框，例如，我希望将其显示为红色。

\documentclass[a4paper,12pt]{article}
\usepackage[utf8]{inputenc}
\usepackage{algorithm}
\usepackage[boxruled,algo2e]{algorithm2e}

\begin{document}

\begin{algorithm2e}[H]
\DontPrintSemicolon
Test Algorithm\\
Test Algorithm\\
Test Algorithm\\
Test Algorithm
\caption{ Test Caption}
\label{LARS Algorithm}
\end{algorithm2e}

\end{document}

Answer 1

使用一些小技巧，您可以将所需的颜色走私到boxrule和标题的定义中：

\documentclass[a4paper,12pt]{article}
\usepackage[utf8]{inputenc}
\usepackage{algorithm}
\usepackage[boxruled,algo2e]{algorithm2e}

\usepackage{xcolor}
\makeatletter
\def\@algocf@post@boxruled{\end{lrbox}\color{red}\framebox[\hsize]{\box\algocf@algoframe}\par}%
\renewcommand{\algocf@caption@boxruled}{%
  \hbox{%
    \color{red}%
    \vrule%
    \vbox{%
      \addtolength{\hsize}{-0.8pt}%
      \hrule\vskip\interspacetitleboxruled%
      \hbox to\hsize{\unhbox\algocf@capbox\hfill}\vskip\interspacetitleboxruled%
      \addtolength{\hsize}{0.8pt}%
    }% 
    \vrule%
  }\nointerlineskip%
}%
\makeatother

\begin{document}

\begin{algorithm2e}[H]
\DontPrintSemicolon
Test Algorithm\\
Test Algorithm\\
Test Algorithm\\
Test Algorithm
\caption{Test Caption}
\label{LARS-Algorithm}
\end{algorithm2e}

test

\end{document}

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