How to remove repeated numbers (sudoku)?

Question

typescript

I'm making a sudoku game. I need to check that there are no repeating digits vertically, horizontally and in the area, which algorithm is right for me (preferably implemented on js / ts)?

Answer 1

Hold on, it's better to look at other people's work first

Answer 2

An abstract question, the answer depends on your algorithm and what you generally need.
For good, you just need to not generate duplicate numbers initially, and not remove them after the fact.