There's a lot of mention of leetcode on the Blind community. I've frankly never heard of leetcode before joining Blind; when prepping for tech interviews I went to Hackerrank for practice questions. I know some companies use Hackerrank as their platform for online tests. So why leetcode? Does it have better or more relevant questions than Hackerrank? Is its platform better? Or is this just a matter of clever marketing/collaboration with Blind?
Better + more relevant questions (and more questions, some of which are used exactly) and platform is better.