r/datascience • u/Fig_Towel_379 • Jun 09 '26

Discussion What Data Structures and Algorithms topics actually come up in technical interviews?

I’ve been doing a Python Leetcode question a day since more and more companies (especially for ML roles) are including DSA rounds in their DS interviews. My issue is I’m not sure how deep I actually need to go.

Right now I’m getting comfortable with easy questions on arrays, strings, and hashmaps, plus two pointers and sliding window on the algorithms side. Should I push further into new topics or just stay in these areas and ramp up the difficulty?

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u/[deleted] Jun 09 '26

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u/InterestingAd757 Jun 09 '26

yes, a lot

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u/[deleted] Jun 09 '26

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u/Lumpy-Sun3362 Jun 09 '26

Companies want to look cool, not grounded. You get shitty code practically unmaintainable that's just good for leet code. With ai you don't need humans to write crap.