Can I use regex in case expression?

gistfile1.sh

#!/bin/sh

case $1 in
    [1-9])
        echo "Less than 10: $1"
        ;;
    [1-9][0-9])
        echo "Greater than equal 10, and Less than 100: $1"
        ;;
    *)
        echo "Greater than equal 100 or not integer: $1"
esac