桌子上的奇怪物品

Question

考虑以下代码：

\documentclass{article}

\usepackage[ruled,vlined,linesnumbered]{algorithm2e}
\usepackage{amsmath}
\usepackage{amsthm}
\usepackage[utf8]{inputenc} % allow utf-8 input
\usepackage[T1]{fontenc}    % use 8-bit T1 fonts
\usepackage{hyperref}       % hyperlinks
\usepackage{url}            % simple URL typesetting
\usepackage{booktabs}       % professional-quality tables
\usepackage{amsfonts}       % blackboard math symbols
\usepackage{nicefrac}       % compact symbols for 1/2, etc.
\usepackage{microtype}      % microtypography
\usepackage{lipsum}
\usepackage{fancyhdr}       % header
\usepackage[pdftex]{graphicx}
\usepackage{graphics}
\usepackage{epstopdf}
\usepackage{float}
\usepackage{tikz}
%\usepackage{color}
\usepackage{pdfpages}
\usepackage{hhline}
\usepackage[labelfont=bf]{caption}
\usepackage{colortbl}
\usepackage{caption} 
\captionsetup[table]{skip=10pt}
%\usepackage[table]{xcolor}
\graphicspath{{media}}     % organize your images and other figures under media/ folder
\usepackage[english]{babel}
\usepackage[backend=bibtex]{biblatex}


\begin{document}
\begin{table}[H]
\centering
\begin{tabular}{l|l|l}
\hhline{|===|}
Operation / List & Singly-linked list & Doubly-linked list \\
\hline
\texttt{prepend} & $\Theta(1)$ & $\Theta(1)$ \\
\texttt{append}  & $\Theta(1)$ & $\Theta(1)$ \\
\texttt{insert$(i)$}  & $\Theta(i) = \mathcal{O}(N)$ & $\Theta(\min(i, N - i)) = \mathcal{O}(N)$ \\
\hline
\texttt{get$(i)$}     & $\Theta(i)$ & $\Theta(\min(i, N - i))$  \\
\hline
\texttt{removeHead} & $\Theta(1)$ & $\Theta(1)$ \\
\texttt{removeTail} & $\Theta(N)$ & $\Theta(1)$ \\
\texttt{removeAt($i$)}   & $\Theta(i) = \mathcal{O}(N)$ & $\Theta(\min (i, N - i)) = \mathcal{O}(N)$ \\
\hline
\texttt{prependCollection} & $\Theta(M)$ & $\Theta(M)$ \\
\texttt{appendCollection}  & $\Theta(M)$ & $\Theta(M)$ \\
\texttt{insertCollection}  & $\Theta(i + M) = \mathcal{O}(N) + \Theta(M)$ & $\Theta(\min (i, N - i) + M) = \mathcal{O}(N) + \Theta(M)$ \\
\hline
\texttt{removeRange$(b, e)$} & $\Theta(b + M) = \mathcal{O}(N) + \Theta
(M)$ & $\Theta(b + M) = \mathcal{O}(N) + \Theta(M)$ \\
\hhline{|===|}
\label{tbl:linked_lists}
\end{tabular}
\end{table}
\end{document}

编译后，它给我：

我怎样才能解决这个问题？

Answer 1

正如@egreg 在评论中已经指出的那样，您可以通过将指令从环境\label中取出来解决当前的印刷问题tabular。

此外，您可能还希望（a）通过赋予表格更开放的“外观”使其外观更具吸引力，以及（b）tabular通过自动执行在第 1 列中切换到等宽字体以及在第 2 列和第 3 列中切换到内联数学模式的任务，减少环境中的一些代码混乱。

\documentclass{article}
%% (I've tried to simplify the preamble down to the bare minimum)
\usepackage{caption} 
\captionsetup{skip=0.5\baselineskip,labelfont=bf}

%% new:
\usepackage[letterpaper,margin=1in]{geometry} % set page parameters suitably
\usepackage{array} % for "\newcolumntype" macro
\newcolumntype{L}{>{$}l<{$}} % left-aligned, automatic math model
\usepackage{booktabs} % for well-spaced horizontal rules

\begin{document}

\begin{table}[ht] % please not "[H]"
\centering
\caption{xyz}
\label{tbl:linked_lists}

\begin{tabular}{@{} >{\ttfamily}l L L @{}}
\toprule
\multicolumn{1}{@{}l}{Operation\slash List} &
\multicolumn{1}{l}{Singly-linked list} & 
\multicolumn{1}{l}{Doubly-linked list} \\
\midrule
prepend           & \Theta(1) & \Theta(1) \\
append            & \Theta(1) & \Theta(1) \\
insert(i)         & \Theta(i) = \mathcal{O}(N) 
                    & \Theta(\min(i, N - i)) = \mathcal{O}(N) \\
\addlinespace
get(i)            & \Theta(i) & \Theta(\min(i, N - i))  \\
\addlinespace
removeHead        & \Theta(1) & \Theta(1) \\
removeTail        & \Theta(N) & \Theta(1) \\
removeAt(i)       & \Theta(i) = \mathcal{O}(N) 
                    & \Theta(\min (i, N - i)) = \mathcal{O}(N) \\
\addlinespace
prependCollection & \Theta(M) & \Theta(M) \\
appendCollection  & \Theta(M) & \Theta(M) \\
insertCollection  & \Theta(i + M) = \mathcal{O}(N) + \Theta(M) 
                    & \Theta(\min (i, N - i) + M) = \mathcal{O}(N) + \Theta(M) \\
\addlinespace
removeRange(b,e)  & \Theta(b + M) = \mathcal{O}(N) + \Theta (M) 
                    & \Theta(b + M) = \mathcal{O}(N) + \Theta(M) \\
\bottomrule
\end{tabular}
\end{table}

\end{document}