Beamer里如何用演算法環境？

是這樣的，在article類裡面用是沒有問題的，但是一旦放到beamer里，就會報錯，這是為什麼呢？

% !TeX encoding = UTF-8
% !TEX program = xelatex
documentclass[notheorems,handout]{beamer}
usepackage{latexsym}
usepackage{amsmath,amssymb,bm}
usepackage{color,xcolor,tikz}
usepackage{graphicx}
usepackage{algorithm,algorithmic}
usepackage{amsthm}
usepackage{xeCJK}
setCJKmainfont{SimSun}
usepackage{hyperref}
hypersetup{hidelinks}
mode&


{
usetheme{Madrid}
usetheme{Dresden}
%setbeamercovered{transparent}
usefonttheme[onlymath]{serif}
usecolortheme{whale}
}

ewtheorem{proposition}{命題}

ewtheorem{theorem}{定理}

ewtheorem{definition}{定義}

ewtheorem{example}{例}

enewcommandfigurename{圖}

enewcommand ablename{表}

setbeamertemplate{theorems}[numbered]
egin{document}
egin{frame}
egin{algorithm} % enter the algorithm environment
caption{Calculate $y = x^n$} % give the algorithm a caption
label{alg1} % and a label for
ef{} commands later in the document
egin{algorithmic} % enter the algorithmic environment
REQUIRE $n geq 0 vee x
eq 0$
ENSURE $y = x^n$
STATE $y Leftarrow 1$
IF{$n &< 0$} STATE $X Leftarrow 1 / x$ STATE $N Leftarrow -n$ ELSE STATE $X Leftarrow x$ STATE $N Leftarrow n$ ENDIF WHILE{$N eq 0$} IF{$N$ is even} STATE $X Leftarrow X imes X$ STATE $N Leftarrow N / 2$ ELSE[$N$ is odd] STATE $y Leftarrow y imes X$ STATE $N Leftarrow N - 1$ ENDIF ENDWHILE end{algorithmic} end{algorithm} end{frame} end{document}

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卸腰。

Beamer and pseudocode

雖然知乎越來越水，咱們還是先搜一下再問吧……

簡單說就是偽代碼這個環境（其實我沒有用過）是個浮動體，然後呢，用float包然後浮動體位置是H就好啦。

% !TeX encoding = UTF-8
% !TEX program = xelatex
documentclass[notheorems,handout]{beamer}
usepackage{latexsym}
usepackage{amsmath,amssymb,bm}
usepackage{color,xcolor,tikz}
usepackage{graphicx}
usepackage{algorithm,algorithmic}
usepackage{amsthm}
%usepackage{xeCJK}
%setCJKmainfont{SimSun}
usepackage{hyperref}
hypersetup{hidelinks}
mode&


{
usetheme{Madrid}
usetheme{Dresden}
%setbeamercovered{transparent}
usefonttheme[onlymath]{serif}
usecolortheme{whale}
}
usepackage{float} %HERE!!!!!!!!!!!!!!
%
ewtheorem{proposition}{命題}
%
ewtheorem{theorem}{定理}
%
ewtheorem{definition}{定義}
%
ewtheorem{example}{例}

enewcommandfigurename{圖}

enewcommand ablename{表}
setbeamertemplate{theorems}[numbered]
egin{document}
egin{frame}
egin{algorithm}[H] % HERE!!!!!!!!!
caption{Calculate $y = x^n$} % give the algorithm a caption
label{alg1} % and a label for
ef{} commands later in the document
egin{algorithmic} % enter the algorithmic environment
REQUIRE $n geq 0 vee x
eq 0$
ENSURE $y = x^n$
STATE $y Leftarrow 1$
IF{$n &< 0$} STATE $X Leftarrow 1 / x$ STATE $N Leftarrow -n$ ELSE STATE $X Leftarrow x$ STATE $N Leftarrow n$ ENDIF WHILE{$N eq 0$} IF{$N$ is even} STATE $X Leftarrow X imes X$ STATE $N Leftarrow N / 2$ ELSE[$N$ is odd] STATE $y Leftarrow y imes X$ STATE $N Leftarrow N - 1$ ENDIF ENDWHILE end{algorithmic} end{algorithm} end{frame} end{document}

我為了測試方便就把中文相關的部分給注釋掉了。

其實這個問題真的不難找，bing 搜 」algorithm beamer「 第一條就是。

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原來問題在於[H]，這個選項

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