How to create directory and files inside the directory

Question

I want to know how to place files using touch command inside an directory whether it is multiple or single file.help is appreciated

Answer 1

I got the answer

mkdir -p mydir/{colors,shape,animals}

mkdir -p mydir/colors/{basic,blended}
touch mydir/colors/basic/{red,blue,green}
touch mydir/colors/blended/{yellow,orange,pink}
touch mydir/shape/{circle,square,cube}

mkdir -p mydir/animals/{mammals,reptiles} 
touch mydir/animals/mammals/{platypus,bat,dog}
touch mydir/animals/reptiles/{snakes,crocodile,lizard}