Bloomberg vs DE Shaw Interview Questions
Bloomberg lists 1,200 LeetCode interview questions while DE Shaw lists 105. They share 65 problems — 5% of Bloomberg's bank and 62% of DE Shaw's. Focus on the overlap first, then drill into 1,135 Bloomberg-only and 40 DE Shaw-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 65 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Bloomberg and DE Shaw.
Step 2 — Company-specific depth: Add Bloomberg-specific problems like Merge Intervals, Add Two Numbers, Longest Palindromic Substring and DE Shaw-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
65 Shared Questions
High-priority problems to practice for both Bloomberg and DE Shaw.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Valid Parentheses | Easy |
| Insert Delete GetRandom O(1) | Medium |
| Number of Islands | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Trapping Rain Water | Hard |
| Median of Two Sorted Arrays | Hard |
| Majority Element | Easy |
| Container With Most Water | Medium |
| Merge Sorted Array | Easy |
| LRU Cache | Medium |
| Longest Consecutive Sequence | Medium |
| Next Permutation | Medium |
| Koko Eating Bananas | Medium |
| Find First and Last Position of Element in Sorted Array | Medium |
| 4Sum | Medium |
| House Robber | Medium |
| Rotting Oranges | Medium |
| Best Time to Buy and Sell Stock II | Medium |
| Search a 2D Matrix | Medium |
| Unique Paths | Medium |
| Letter Combinations of a Phone Number | Medium |
| Design A Leaderboard | Medium |
| Maximum Product Subarray | Medium |
| Minimum Size Subarray Sum | Medium |
| Sliding Window Maximum | Hard |
| Peak Index in a Mountain Array | Medium |
| Wildcard Matching | Hard |
| Split Array Largest Sum | Hard |
Showing top 30 of 65 shared problems.
Unique to Bloomberg (1,135)
Problems in Bloomberg's list that do not appear at DE Shaw.
| Problem | Difficulty |
|---|---|
| Merge Intervals | Medium |
| Add Two Numbers | Medium |
| Longest Palindromic Substring | Medium |
| Invalid Transactions | Medium |
| 3Sum | Medium |
| Longest Common Prefix | Easy |
| Flatten a Multilevel Doubly Linked List | Medium |
| Word Search | Medium |
| Reverse Integer | Medium |
| Decode String | Medium |
| Valid Anagram | Easy |
| Remove Duplicates from Sorted Array | Easy |
Unique to DE Shaw (40)
Problems in DE Shaw's list that do not appear at Bloomberg.
Frequently Asked Questions
How many LeetCode questions do Bloomberg and DE Shaw share?
Bloomberg and DE Shaw share 65 LeetCode interview questions. 1135 problems appear only in Bloomberg's list and 40 appear only in DE Shaw's list.
What topics overlap most between Bloomberg and DE Shaw?
The most common shared topics between Bloomberg and DE Shaw are Array (23 shared questions), Hash Table (8 shared questions), Dynamic Programming (8 shared questions), Binary Search (7 shared questions), Two Pointers (5 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Bloomberg or DE Shaw?
Bloomberg has 395 Easy, 645 Medium, and 160 Hard questions. DE Shaw has 11 Easy, 64 Medium, and 30 Hard questions. DE Shaw has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Bloomberg and DE Shaw?
Start with the 65 shared problems since they cover what both companies ask most often. Then add 20 Bloomberg-specific and 20 DE Shaw-specific questions to round out your prep.