Prepare for X technical interviews with 52 tracked LeetCode questions, sortable by difficulty and topic.
| Title | Difficulty | Topics | Frequency | LeetCode |
|---|---|---|---|---|
| Insert Delete GetRandom O(1) | Medium | 100% | Solve | |
| LRU Cache | Medium | 100% | Solve | |
| Number of Connected Components in an Undirected Graph | Medium | 100% | Solve | |
| Time Needed to Buy Tickets | Easy | 100% | Solve | |
| Happy Number | Easy | 99% | Solve | |
| Number of Black Blocks | Medium | 97.8% | Solve | |
| Binary Gap | Easy | 95.1% | Solve | |
| Design Skiplist | Hard | 95.1% | Solve | |
| Tweet Counts Per Frequency | Medium | 94.2% | Solve | |
| Investments in 2016 | Medium | 91.9% | Solve | |
| Word Break II | Hard | 90.4% | Solve | |
| Flatten 2D Vector | Medium | 89.9% | Solve | |
| Count Student Number in Departments | Medium | 89.4% | Solve | |
| Customer Placing the Largest Number of Orders | Easy | 89.4% | Solve | |
| Finding the Users Active Minutes | Medium | 89.4% | Solve | |
| Masking Personal Information | Medium | 89.4% | Solve | |
| Minimum Elements to Add to Form a Given Sum | Medium | 89.4% | Solve | |
| Minimum Genetic Mutation | Medium | 89.4% | Solve | |
| Rectangles Area | Medium | 89.4% | Solve | |
| Tree Node | Medium | 89.4% | Solve |
52 questions total
Company analytics
Questions tracked
52
Questions currently linked to X
Topics represented
44
Distinct topics visible in this company set
Dominant difficulty
medium
62% of tracked questions
Avg frequency score
71.0
Mean frequency across this company question set
X currently has 52 tracked questions linked to 44 topics, so this page is a good benchmark for how deep the dataset goes on one employer.
The most common topics for X include Array, Hash Table, String, and Design. Array alone appears 21 times in the visible topic distribution. That topic spread helps you identify whether this company is repeating a few patterns or testing across a broader surface area.
The current question set averages a frequency score of 71.0, and medium is the dominant difficulty bucket at 62% of tracked coverage. That makes it easier to decide whether to practice for repetition, complexity, or both.
X related paths
This section answers the most practical questions about using the X route as a company-specific LeetCode study page.
Start with the highest-frequency questions inside Array, Hash Table, and String, then sort the table by frequency to build a shortlist. That gives you a faster first pass through X's interview patterns than trying to cover every linked problem at once.
medium makes up 62% of the tracked X question set. Use that split to decide whether your study plan should emphasize coverage, realistic interview pressure, or deeper problem solving.
Use this page to identify X's strongest topic signal, then open Array and the global most-asked or questions explorer routes to see whether that company-specific pattern is also common across the wider dataset.
