DE Shaw vs Siemens Interview Questions
DE Shaw lists 105 LeetCode interview questions while Siemens lists 25. They share 6 problems — 6% of DE Shaw's bank and 24% of Siemens's. Focus on the overlap first, then drill into 99 DE Shaw-only and 19 Siemens-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 6 overlapping problems first. These are the highest-yield questions for candidates interviewing at both DE Shaw and Siemens.
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 Siemens-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
6 Shared Questions
High-priority problems to practice for both DE Shaw and Siemens.
| Problem | Difficulty |
|---|---|
| Valid Parentheses | Easy |
| Maximum Product Subarray | Medium |
| LRU Cache | Medium |
| Number of Islands | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Two Sum | Easy |
Unique to DE Shaw (99)
Problems in DE Shaw's list that do not appear at Siemens.
Unique to Siemens (19)
Problems in Siemens's list that do not appear at DE Shaw.
Frequently Asked Questions
How many LeetCode questions do DE Shaw and Siemens share?
DE Shaw and Siemens share 6 LeetCode interview questions. 99 problems appear only in DE Shaw's list and 19 appear only in Siemens's list.
What topics overlap most between DE Shaw and Siemens?
The most common shared topics between DE Shaw and Siemens are Array (4 shared questions), Dynamic Programming (2 shared questions), Hash Table (2 shared questions), String (1 shared questions), Stack (1 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: DE Shaw or Siemens?
DE Shaw has 11 Easy, 64 Medium, and 30 Hard questions. Siemens has 8 Easy, 13 Medium, and 4 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 Siemens?
Start with the 6 shared problems since they cover what both companies ask most often. Then add 20 DE Shaw-specific and 19 Siemens-specific questions to round out your prep.