How to change algorithm title format from point(.) to dash(-)

Question

I am using package {algorithm2e} to write algorithm. Now I want to alter the algorithm title format with dash(-), for example, I am writing the first algorithm in chapter 3, so the title of this algorithm is 'Algorithm 3.1:', but I want a format like 'Algorithm 3-1:'. How to deal with it? Thanks for your help.

Answer 1

\documentclass{report}
\usepackage[algochapter]{algorithm2e}

\makeatletter
\renewcommand\thealgocf{\csname the\algocf@within\endcsname-\@arabic\c@algocf}% change dash to whatever you prefer
\makeatother

\begin{document}
\begin{algorithm}
\caption{Alg}
\end{algorithm}
\end{document}