Random các phương án trắc nghiệm trong gói ex_test (LaTeX)

Để có thể hoán đổi vị trí các phương án trắc nghiệm trong gói ex_test trực tiếp trên LaTeX, ta tiến hành chèn đoạn code bên dưới trước \begin{document}, sau đó thực thi chương trình.

Tệp mẫu: https://www.overleaf.com/read/pvbjtyhjvhrx

%Sao chép toàn bộ mã bên dưới và dán trước \begin{document}

%Tạo mã random các phương án

\newcommand{\choiceEX}[5][0]{

\setlength\tabmaxwidth{\linewidth-0.02\dorongfix-\widthalpha-3\fboxsep}

\setlength\fourthtabwidth{0.25\linewidth-0.02\dorongfix-\widthalpha-3\fboxsep}

\setlength\halftabwidth{0.5\linewidth-0.02\dorongfix-\widthalpha-3\fboxsep}

\settowidth\widthcha{#2}

\ifdim\widthch<\widthcha\relax\setlength{\widthch}{\widthcha}\fi%

\settowidth\widthchb{#3}%

\ifdim\widthch<\widthchb\relax\setlength{\widthch}{\widthchb}\fi%

\settowidth\widthchc{#4}%

\ifdim\widthch<\widthchc\relax\setlength{\widthch}{\widthchc}\fi%

\settowidth\widthchd{#5}%

\ifdim\widthch<\widthchd\relax\setlength{\widthch}{\widthchd}\fi%

\ifthenelse{\equal{#1}{0}}

{

\ifdim\widthch<\fourthtabwidth

\boncot{#2}{#3}{#4}{#5}

\else\ifdim\widthch<\halftabwidth

\haicot{#2}{#3}{#4}{#5}

\else

\motcot{#2}{#3}{#4}{#5}

\fi\fi

}

{

\ifthenelse{\equal{#1}{1}}

{

\def\parskipchoice{0.2cm}

\motcot{#2}{#3}{#4}{#5}}

{

\ifthenelse{\equal{#1}{2}}

{

\def\parskipchoice{0.2cm}

\haicot{#2}{#3}{#4}{#5}}

{

\ifthenelse{\equal{#1}{4}}

{

\def\parskipchoice{0.2cm}

\boncot{#2}{#3}{#4}{#5}}

{

\def\parskipchoice{#1}

\ifdim\widthch<\fourthtabwidth

\boncot{#2}{#3}{#4}{#5}

\else\ifdim\widthch<\halftabwidth

\haicot{#2}{#3}{#4}{#5}

\else

\motcot{#2}{#3}{#4}{#5}

\fi\fi

}}}}

}

\def\choiceRandom{off}

\renewcommand{\choice}[5][\choiceRandom]{

\def\randomON{ON}

\ifx\randomON\choiceRandom

\pgfmathsetmacro{\dung}{int(random(2,25))}

\ifnum\dung=2\choiceEX{#2}{#3}{#4}{#5}\fi

\ifnum\dung=3\choiceEX{#2}{#3}{#5}{#4}\fi

\ifnum\dung=4\choiceEX{#2}{#4}{#3}{#5}\fi

\ifnum\dung=5\choiceEX{#2}{#4}{#5}{#3}\fi

\ifnum\dung=6\choiceEX{#2}{#5}{#3}{#4}\fi

\ifnum\dung=7\choiceEX{#2}{#5}{#4}{#3}\fi

\ifnum\dung=8\choiceEX{#3}{#2}{#4}{#5}\fi

\ifnum\dung=9\choiceEX{#3}{#2}{#5}{#4}\fi

\ifnum\dung=10\choiceEX{#3}{#4}{#2}{#5}\fi

\ifnum\dung=11\choiceEX{#3}{#4}{#5}{#2}\fi

\ifnum\dung=12\choiceEX{#3}{#5}{#2}{#4}\fi

\ifnum\dung=13\choiceEX{#3}{#5}{#4}{#2}\fi

\ifnum\dung=14\choiceEX{#4}{#2}{#3}{#5}\fi

\ifnum\dung=15\choiceEX{#4}{#2}{#5}{#3}\fi

\ifnum\dung=16\choiceEX{#4}{#3}{#2}{#5}\fi

\ifnum\dung=17\choiceEX{#4}{#3}{#5}{#2}\fi

\ifnum\dung=18\choiceEX{#4}{#5}{#2}{#3}\fi

\ifnum\dung=19\choiceEX{#4}{#5}{#3}{#2}\fi

\ifnum\dung=20\choiceEX{#5}{#2}{#3}{#4}\fi

\ifnum\dung=21\choiceEX{#5}{#2}{#4}{#3}\fi

\ifnum\dung=22\choiceEX{#5}{#3}{#2}{#4}\fi

\ifnum\dung=23\choiceEX{#5}{#3}{#4}{#2}\fi

\ifnum\dung=24\choiceEX{#5}{#4}{#2}{#3}\fi

\ifnum\dung=25\choiceEX{#5}{#4}{#3}{#2}\fi

\else

\choiceEX{#2}{#3}{#4}{#5}

\fi

}

%Kết thúc mã random các phương án

\def\choiceRandom{ON}%Tắt tùy chọn này nếu không muốn random