LaTeX的算法 | 伪代码排版

\usepackage{algorithm}
\usepackage{algorithmic}

\renewcommand{\algorithmicrequire}{\textbf{Input:}} 
\renewcommand{\algorithmicensure}{\textbf{Output:}}

\begin{algorithm}[H]
    \caption{algorithm 1}
    \begin{algorithmic}[1] % 此处的[1]控制一下算法中的每句前面都有标号 
        \REQUIRE input
        \ENSURE output 
        \STATE {Step A}
        \STATE {Step B}
        \FOR {$ i = 1 $; $ i < n $; $ i ++ $ }
            \STATE {Step C}
        \ENDFOR
        \WHILE {$ |E_n| \leq L_1 $}
            \STATE {Step D}
        \ENDWHILE
        \FORALL {...}
            \STATE {Step E}
        \ENDFOR
        \IF {condition}
            \STATE {Step F}
        \ENDIF
    \end{algorithmic} 
\end{algorithm}

\usepackage[ruled]{algorithm2e}

\begin{algorithm}[t]
    \caption{Algorithm Test}
    \label{algorithm:test}
    \LinesNumbered
    \KwIn {input}
    \KwOut {output}
    \For{i = 1 to n}{   
        \eIf{condition} {
            Step A \tcp*{comment inline}
            \tcp{new line comment}
        } {
            i ++;
        }
    }
    \While{condition}{
        do something
    }
    Step B \;
    Step C \;
    Step D ;
\end{algorithm}

\usepackage[ruled,vlined]{algorithm2e}