Deloitte vs X Interview Questions
Deloitte lists 43 LeetCode interview questions while X lists 51. They share 3 problems — 7% of Deloitte's bank and 6% of X's. Focus on the overlap first, then drill into 40 Deloitte-only and 48 X-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 X.
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 X-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: X 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 X.
| 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 X.
| 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 X (48)
Problems in X's list that do not appear at Deloitte.
| Problem | Difficulty |
|---|---|
| Trapping Rain Water | Hard |
| Tweet Counts Per Frequency | Medium |
| LRU Cache | Medium |
| Flatten Nested List Iterator | Medium |
| Implement Trie (Prefix Tree) | Medium |
| Insert Delete GetRandom O(1) | Medium |
| Design Twitter | Medium |
| Binary Gap | Easy |
| Regular Expression Matching | Hard |
| Integer to Roman | Medium |
| Word Break II | Hard |
| Alien Dictionary | Hard |
Frequently Asked Questions
How many LeetCode questions do Deloitte and X share?
Deloitte and X share 3 LeetCode interview questions. 40 problems appear only in Deloitte's list and 48 appear only in X's list.
What topics overlap most between Deloitte and X?
The most common shared topics between Deloitte and X 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 X?
Deloitte has 17 Easy, 23 Medium, and 3 Hard questions. X has 8 Easy, 31 Medium, and 12 Hard questions. X has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Deloitte and X?
Start with the 3 shared problems since they cover what both companies ask most often. Then add 20 Deloitte-specific and 20 X-specific questions to round out your prep.