Deloitte vs Twitter Interview Questions
Deloitte lists 43 LeetCode interview questions while Twitter lists 53. They share 3 problems — 7% of Deloitte's bank and 6% of Twitter's. Focus on the overlap first, then drill into 40 Deloitte-only and 50 Twitter-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 3 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Deloitte and Twitter.
Step 2 — Company-specific depth: Add Deloitte-specific problems like Two Sum, Change Null Values in a Table to the Previous Value, Second Highest Salary 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
3 Shared Questions
High-priority problems to practice for both Deloitte and Twitter.
| Problem | Difficulty |
|---|---|
| Merge k Sorted Lists | Hard |
| Valid Parentheses | Easy |
| Merge Intervals | Medium |
Unique to Deloitte (40)
Problems in Deloitte's list that do not appear at Twitter.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Change Null Values in a Table to the Previous Value | Medium |
| Second Highest Salary | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Longest Palindromic Substring | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Longest Common Prefix | Easy |
| Container With Most Water | Medium |
| Palindrome Number | Easy |
| Climbing Stairs | Easy |
| Valid Palindrome | Easy |
| Add Binary | Easy |
Unique to Twitter (50)
Problems in Twitter's list that do not appear at Deloitte.
| Problem | Difficulty |
|---|---|
| Regular Expression Matching | Hard |
| Integer to Roman | Medium |
| Trapping Rain Water | Hard |
| Multiply Strings | Medium |
| Wildcard Matching | Hard |
| Permutation Sequence | Hard |
| Pascal's Triangle | Easy |
| Word Break II | Hard |
| LRU Cache | Medium |
| Time Needed to Buy Tickets | Easy |
| Max Points on a Line | Hard |
| One Edit Distance | Medium |
Frequently Asked Questions
How many LeetCode questions do Deloitte and Twitter share?
Deloitte and Twitter share 3 LeetCode interview questions. 40 problems appear only in Deloitte's list and 50 appear only in Twitter's list.
What topics overlap most between Deloitte and Twitter?
The most common shared topics between Deloitte and Twitter are Linked List (1 shared questions), Divide and Conquer (1 shared questions), Heap (Priority Queue) (1 shared questions), Merge Sort (1 shared questions), String (1 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Deloitte or Twitter?
Deloitte has 17 Easy, 23 Medium, and 3 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 Deloitte and Twitter?
Start with the 3 shared problems since they cover what both companies ask most often. Then add 20 Deloitte-specific and 20 Twitter-specific questions to round out your prep.