使用表格设置中的数组进行间距和对齐

Question

有人愿意帮我把表格内容居中吗？由于某种原因，我的文本被移到了每个单元格的底部，中间和最右边的垂直线没有完全闭合。

\begin{table}[h]
\small
\begin{center}
\caption{\small{Example}\label{table:1}
\begin{tabular}{|c|c|c|}
\hline\\
$1$ & $2$ & $3$\\
\hline\\
$\{x, y, z\}$&
{\includegraphics[height=1.7 cm]{1}}&
$\begin{array}{c}
1\\
2\\
3\\
4\\
\end{array}$\\
\hline\\
$\{1, 2, 3, 4\}$&
{\includegraphics[height=1.7 cm]{2}}&
$\begin{array}{c}
1\\
2\\
3\\
\end{array}$\\
\hline\\
$\{5, 6, 7\}$&
{\includegraphics[height=1.7 cm]{3}}&
$\{1, 2, 3, 4\}$\\
\hline
\end{tabular}
\end{center}
\end{table}

Answer 1

像这样：

首先，我清理了代码中所有不必要的\\（在 之后\hline）和多余的反斜杠。借助包makecell替换嵌套数组、将包adjustbox中的图像居中放置在单元格中，并添加垂直边距：

\documentclass{article}
\usepackage{graphicx}
\usepackage[font=small]{caption}
\usepackage[export]{adjustbox}
\usepackage{array,makecell}

\begin{document}
    \begin{table}[htb]
\small
\centering
\caption{Example}
    \label{table:1}
\begin{tabular}{|*{3}{>{$}c<{$}|}}
    \hline
1               &   2   &   3           \\
    \hline
\{x, y, z\}     &   \includegraphics[height=1.7cm, margin=0pt 3pt, valign=M]{example-image-a}
                    &   \makecell{
                        1\\
                        2\\
                        3\\
                        4}              \\
    \hline
\{1, 2, 3, 4\}  &   \includegraphics[height=1.7cm, margin=0pt 3pt, valign=M]{example-image-b}
                    &   \begin{array}{c}% to see that between use of array and makecell is not difference
                        1\\
                        2\\
                        3
                        \end{array}     \\
    \hline
\{5, 6, 7\}     &   \includegraphics[height=1.7cm, margin=0pt 3pt, valign=M]{example-image-c}
                    &   \{1, 2, 3, 4\}  \\
    \hline
\end{tabular}
    \end{table}
\end{document}