Table of Contents in middle of the page and in larger font size?

Question

How to display the contents page in middle of the page and in large size than the other font size within the article?

I have used the command \tableofcontents.

The output is as follows:

Answer 1

Adding \vspace*{\fill} before and after the \tableofcontents, and a \newpage after the second \vspace*{\fill}, is an easy way to achieve this:

\documentclass{article}
\begin{document}
    % May also want \newpage here (e.g. if title page before toc)
    \vspace*{\fill}
    \tableofcontents
    \vspace*{\fill}
    \newpage % Page break between toc and first section
    \section{Introduction}
    \section{Abstract Algebra}
    \section{p-adic numbers}
    \section{Concept}
    \section{Algebraic Closure}
\end{document}

As noted in the code, if you have content before the toc (e.g. a titlepage), you will also want a \newpage before the first \vspace*{\fill}.

Output: