X interview 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.
43Known questions
0Asked in 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 | — |
| Invalid Tweets | Easy | — |
| Tweet Counts Per Frequency | Medium | — |
| Design Twitter | Medium | — |
| Flatten Nested List Iterator | Medium | — |
| LRU Cache | Medium | — |
| Merge Intervals | Medium | — |
| Trapping Rain Water | Hard | — |
| Number of Black Blocks | Medium | — |
| Time Needed to Buy Tickets | Easy | — |
| Count Sub Islands | Medium | — |
| Remove All Occurrences of a Substring | Medium | — |
| Process Tasks Using Servers | Medium | — |
| Finding the Users Active Minutes | Medium | — |
| Minimum Elements to Add to Form a Given Sum | Medium | — |
| Design Authentication Manager | Medium | — |
| Minimum Number of Steps to Make Two Strings Anagram | Medium | — |
| Design Skiplist | Hard | — |
| Binary Gap | Easy | — |
| Masking Personal Information | Medium | — |
| Tree Node | Medium | — |
| Customer Placing the Largest Number of Orders | Easy | — |
| Investments in 2016 | Medium | — |
| Validate IP Address | Medium | — |
| Trapping Rain Water II | Hard | — |
Practice a X interview
Take the same AI interview a X candidate would face: you talk it through while you code, and get a scorecard with what earned each score. Three single-question interviews a day are free.