Home / Company interviews / X · Updated November 2026

X interview questions and practice

43 coding questions are known to come up in X interviews (8 easy, 25 medium, 10 hard). The most common topics are Array, Hash Table, String, Design.

Practice interviews built from public job posts and question lists. Each open post links to the original so you can apply on X’s own site; X does not run, see or review your practice.

Practise X questions →Or one question first · 2 min

43Known questions

0Asked in the last 6 months

25Medium

10Hard

Coding questions X asks

From public company-tagged interview question lists. Most recent and most frequent first.

Easy 8Medium 25Hard 10

Array16
Hash Table14
String12
Design8
Linked List6
Heap (Priority Queue)6
Dynamic Programming6
Math6
Database4
Stack4
Recursion4
Breadth-First Search3

Question	Difficulty	Asked recently
Minimum Genetic Mutation	Medium	No
Invalid Tweets	Easy	No
Tweet Counts Per Frequency	Medium	No
Design Twitter	Medium	No
Flatten Nested List Iterator	Medium	No
LRU Cache	Medium	No
Merge Intervals	Medium	No
Trapping Rain Water	Hard	No
Number of Black Blocks	Medium	No
Time Needed to Buy Tickets	Easy	No
Count Sub Islands	Medium	No
Remove All Occurrences of a Substring	Medium	No
Process Tasks Using Servers	Medium	No
Finding the Users Active Minutes	Medium	No
Minimum Elements to Add to Form a Given Sum	Medium	No
Design Authentication Manager	Medium	No
Minimum Number of Steps to Make Two Strings Anagram	Medium	No
Design Skiplist	Hard	No
Binary Gap	Easy	No
Masking Personal Information	Medium	No
Tree Node	Medium	No
Customer Placing the Largest Number of Orders	Easy	No
Investments in 2016	Medium	No
Validate IP Address	Medium	No
Trapping Rain Water II	Hard	No

Questions about X interviews

What topics do X interviews cover?

The ones that come up most are Array, Hash Table, String, Design, Linked List.

What coding questions does X ask?

43 questions are tagged to X in public interview lists: 8 easy, 25 medium and 10 hard. The most asked include Minimum Genetic Mutation, Invalid Tweets, Tweet Counts Per Frequency.

How do I practise a X interview?

Answer a 2-minute question for free, then take a mock interview with an AI interviewer, voice and live coding. You get a review that marks the exact line that cost you. The screen and Round 1 of your first role interview are free.

Practise a X interview before it counts.

Talk it through while you code, and get a review that marks the exact line that cost you. Free to start.

Practise X questions →

X interview questions and practice

Coding questions X asks

Questions about X interviews

Practise a X interview before it counts.

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