Should data scientists Leetcode? I was under the impression most of them were doing SQL and high-level Python. Have any DS been asked data structure/algo questions in interviews?
Kaggle. I would look there for practice. Though I'm not sure what an interview would look like. It probably depends where you interview and who you happen to interview with. DS interview at Boeing was of course still behavioral but all their interviews are.
Leetcode is not very helpful for ds interviews, except a few SQL questions. Ds interviews focus more on machine learning algorithms (theory) and some bit of SQL and r/python/sas coding
What about data analyst?
Even for DS there will be coding questions
Kaggle
Data scientist without decent programming ability is embarrassing.
DeetCode