Leetcode questions are not selected for novelty. In fact, the best way to get a problem turned into a Leetcode question is to post it to Leetcode's discussion board and say someone asked you it in an interview at a big tech company. So it's still possible that some or even many these questions appear nearly verbatim in the training data.
Leetcode questions are not selected for novelty. In fact, the best way to get a problem turned into a Leetcode question is to post it to Leetcode's discussion board and say someone asked you it in an interview at a big tech company. So it's still possible that some or even many these questions appear nearly verbatim in the training data.