DE Shaw vs Hashedin Interview Questions
DE Shaw lists 105 LeetCode interview questions while Hashedin lists 23. They share 7 problems — 7% of DE Shaw's bank and 30% of Hashedin's. Focus on the overlap first, then drill into 98 DE Shaw-only and 16 Hashedin-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 7 overlapping problems first. These are the highest-yield questions for candidates interviewing at both DE Shaw and Hashedin.
Step 2 — Company-specific depth: Add DE Shaw-specific problems like Binary Tree Cameras, Find Minimum Cost to Remove Array Elements, Maximum Number of Subsequences After One Inserting and Hashedin-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: DE Shaw skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
7 Shared Questions
High-priority problems to practice for both DE Shaw and Hashedin.
| Problem | Difficulty |
|---|---|
| Trapping Rain Water | Hard |
| Koko Eating Bananas | Medium |
| Maximum Product Subarray | Medium |
| Number of Islands | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Container With Most Water | Medium |
| Next Permutation | Medium |
Unique to DE Shaw (98)
Problems in DE Shaw's list that do not appear at Hashedin.
Unique to Hashedin (16)
Problems in Hashedin's list that do not appear at DE Shaw.
| Problem | Difficulty |
|---|---|
| Find Candidates for Data Scientist Position | Easy |
| Maximize Items | Hard |
| Maximum Points Inside the Square | Medium |
| Count the Number of Powerful Integers | Hard |
| Minimize Length of Array Using Operations | Medium |
| Maximum Subarray | Medium |
| Minimum Cost to Make Array Equal | Hard |
| Chalkboard XOR Game | Hard |
| Jump Game II | Medium |
| Edit Distance | Medium |
| 3Sum | Medium |
| Minimum Time to Repair Cars | Medium |
Frequently Asked Questions
How many LeetCode questions do DE Shaw and Hashedin share?
DE Shaw and Hashedin share 7 LeetCode interview questions. 98 problems appear only in DE Shaw's list and 16 appear only in Hashedin's list.
What topics overlap most between DE Shaw and Hashedin?
The most common shared topics between DE Shaw and Hashedin are Array (7 shared questions), Two Pointers (3 shared questions), Dynamic Programming (3 shared questions), Stack (1 shared questions), Monotonic Stack (1 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: DE Shaw or Hashedin?
DE Shaw has 11 Easy, 64 Medium, and 30 Hard questions. Hashedin has 3 Easy, 15 Medium, and 5 Hard questions. DE Shaw has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both DE Shaw and Hashedin?
Start with the 7 shared problems since they cover what both companies ask most often. Then add 20 DE Shaw-specific and 16 Hashedin-specific questions to round out your prep.