If you've done a fair amount of leetcode problems you can recognize them and feel their levels. Then afterwards you can search and confirm your expectations. I

If you've done a fair amount of leetcode problems you can recognize them and feel their levels. Then afterwards you can search and confirm your expectations. It is not uncommon to have either verbatim or lightly modified leetcode problems as technical challenges for interviews. I think Facebook now makes it standard you need to be able to solve 2 leetcode medium questions in a 45 minute interview.