Recently, I just finished Persona OA, the overall experience and traditional leetcode algorithm questions are completely different, more like OOD + system...

Recently, many students have successfully passed Stripe OA, and many of them said that the question bank is actually more focused, and that they have practiced LeetCode...

I came across a very classic Tiktok OA set on HackerRank this time, and the whole set of three questions covers the DP, fully memorized...

Just passed IBM OA this afternoon , the platform is HackerRank. the overall experience, the difficulty is easier than the flax I did a few days ago a...

I would like to share a set of HRT OA that I recently took a student through. This student is a candidate for this year's impact quant / trading firm...

This year's fall recruiting for Citadel's OA is here again! As one of the top quantitative firms in North America, many students feel pressured when they hear Citadel...

It's really been an intensive OA bombing mode lately, with several sessions lined up in a day, almost non-stop. Yesterday just finished a round of Goldman Sachs onli...

This morning I just accompanied a student to complete the Microsoft SDE OA, two questions at once, the whole process in less than 20 minutes, after he finished the whole person...

It's been a long time waiting, the North American 2026 SIG Quant OA is finally here! The test is really the same as it has been for years: 1 hour, 17 questions, logic, generalization...

I recently helped a student brush up on a set of Capital One's OA, and the overall question type was still on the regular logic + programming combination. The time is not particularly tight, but the questions...