Update end of the day

I made two for loops; one substitutes the X or O in the grid and the
other strips out the remaining placeholder numbers. Incidentally, I
wrote myself into a trap because now I can’t swap X or O into my
placeholders (I will be able to use the first for loop for a user
defined size game, and will still keep the space (“ “) stripping for
loop).
Tomorrow I will use a method of array index substitution to swap the
specific indexes with an X or an O based on the users 1-9 input.