Bloomberg vs Twitter Interview Questions
Bloomberg lists 1,200 LeetCode interview questions while Twitter lists 53. They share 34 problems — 3% of Bloomberg's bank and 64% of Twitter's. Focus on the overlap first, then drill into 1,166 Bloomberg-only and 19 Twitter-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 34 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Bloomberg and Twitter.
Step 2 — Company-specific depth: Add Bloomberg-specific problems like Two Sum, Add Two Numbers, Longest Substring Without Repeating Characters and Twitter-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Twitter skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
34 Shared Questions
High-priority problems to practice for both Bloomberg and Twitter.
| Problem | Difficulty |
|---|---|
| Merge Intervals | Medium |
| Valid Parentheses | Easy |
| Insert Delete GetRandom O(1) | Medium |
| Trapping Rain Water | Hard |
| LRU Cache | Medium |
| Reverse Linked List | Easy |
| Word Break II | Hard |
| Pascal's Triangle | Easy |
| Merge k Sorted Lists | Hard |
| Rotting Oranges | Medium |
| Integer to Roman | Medium |
| Regular Expression Matching | Hard |
| Happy Number | Easy |
| Wildcard Matching | Hard |
| Implement Trie (Prefix Tree) | Medium |
| Lowest Common Ancestor of a Binary Search Tree | Medium |
| Minimum Number of Steps to Make Two Strings Anagram | Medium |
| Permutation Sequence | Hard |
| Multiply Strings | Medium |
| Remove All Occurrences of a Substring | Medium |
| Invalid Tweets | Easy |
| Minimum Genetic Mutation | Medium |
| Trapping Rain Water II | Hard |
| Max Points on a Line | Hard |
| Random Pick with Weight | Medium |
| Investments in 2016 | Medium |
| Flatten Nested List Iterator | Medium |
| Design Twitter | Medium |
| Alien Dictionary | Hard |
| Time Needed to Buy Tickets | Easy |
Showing top 30 of 34 shared problems.
Unique to Bloomberg (1,166)
Problems in Bloomberg's list that do not appear at Twitter.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Add Two Numbers | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Number of Islands | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Longest Palindromic Substring | Medium |
| Invalid Transactions | Medium |
| 3Sum | Medium |
| Longest Common Prefix | Easy |
| Flatten a Multilevel Doubly Linked List | Medium |
| Word Search | Medium |
| Median of Two Sorted Arrays | Hard |
Unique to Twitter (19)
Problems in Twitter's list that do not appear at Bloomberg.
| Problem | Difficulty |
|---|---|
| One Edit Distance | Medium |
| Flatten 2D Vector | Medium |
| Best Meeting Point | Hard |
| Design Skiplist | Hard |
| Number of Connected Components in an Undirected Graph | Medium |
| Tweet Counts Per Frequency | Medium |
| Validate IP Address | Medium |
| Count Student Number in Departments | Medium |
| Rectangles Area | Medium |
| Customer Placing the Largest Number of Orders | Easy |
| Number of Black Blocks | Medium |
| Masking Personal Information | Medium |
Frequently Asked Questions
How many LeetCode questions do Bloomberg and Twitter share?
Bloomberg and Twitter share 34 LeetCode interview questions. 1166 problems appear only in Bloomberg's list and 19 appear only in Twitter's list.
What topics overlap most between Bloomberg and Twitter?
The most common shared topics between Bloomberg and Twitter are Array (11 shared questions), String (11 shared questions), Hash Table (10 shared questions), Math (7 shared questions), Design (5 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Bloomberg or Twitter?
Bloomberg has 395 Easy, 645 Medium, and 160 Hard questions. Twitter has 8 Easy, 33 Medium, and 12 Hard questions. Twitter has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Bloomberg and Twitter?
Start with the 34 shared problems since they cover what both companies ask most often. Then add 20 Bloomberg-specific and 19 Twitter-specific questions to round out your prep.