What are the most frequent LeetCode questions for X?

The top problems asked in X technical interviews include Minimum Genetic Mutation, Trapping Rain Water, Merge Intervals. In total, 51 verified problems are tracked across Easy (8), Medium (31), and Hard (12) tiers.

Where can I find company-wise LeetCode questions for X?

LeetMap Pro provides a complete, verified list of 51 company-wise X coding interview questions filtered by 30-day, 3-month, and 6-month recency windows, 100% free with no paywall or subscription.

How does LeetMap track X interview problem recency?

LeetMap weights problem occurrences across 30-day, 3-month, and 6-month recency windows to ensure candidates focus on problems actively being asked in the current hiring cycle.

What difficulty distribution should I expect in X coding rounds?

For X, Medium difficulty problems represent the largest share (31 problems), followed by Easy (8) and Hard (12). Mastering foundational patterns like Trees, Graphs, and Dynamic Programming is essential.

XLeetCode Questions

Verified

51 questions·8 Easy·31 Medium·12 Hard

Company-wise coding interview questions asked by X, ranked by real frequency across 30-day, 3-month, and 6-month recency windows.

SQL (6)

⌘K

#433Minimum Genetic Mutation

Medium·Freq 100%·Acc 0.6%

#42Trapping Rain Water

Hard·Freq 97%·Acc 0.7%

#56Merge Intervals

Medium·Freq 97%·Acc 0.5%

#146LRU Cache

Medium·Freq 97%·Acc 0.5%

#341Flatten Nested List Iterator

Medium·Freq 97%·Acc 0.7%

#355Design Twitter

Medium·Freq 97%·Acc 0.5%

#1348Tweet Counts Per Frequency

Medium·Freq 97%·Acc 0.5%

#1683Invalid TweetsSQL

Easy·Freq 97%·Acc 0.9%

#10Regular Expression Matching

Hard·Freq 94%·Acc 0.3%

#12Integer to Roman

Medium·Freq 94%·Acc 0.7%

#20Valid Parentheses

Easy·Freq 94%·Acc 0.4%

#23Merge k Sorted Lists

Hard·Freq 94%·Acc 0.6%

#43Multiply Strings

Medium·Freq 94%·Acc 0.4%

#44Wildcard Matching

Hard·Freq 94%·Acc 0.3%

#60Permutation Sequence

Hard·Freq 94%·Acc 0.5%

#118Pascal's Triangle

Easy·Freq 94%·Acc 0.8%

#140Word Break II

Hard·Freq 94%·Acc 0.6%

#2073Time Needed to Buy Tickets

Easy·Freq 94%·Acc 0.7%

#149Max Points on a Line

Hard·Freq 94%·Acc 0.3%

#161One Edit Distance

Medium·Freq 94%·Acc 0.3%

#202Happy Number

Easy·Freq 94%·Acc 0.6%

#206Reverse Linked List

Easy·Freq 94%·Acc 0.8%

#208Implement Trie (Prefix Tree)

Medium·Freq 94%·Acc 0.7%

#218The Skyline Problem

Hard·Freq 94%·Acc 0.5%

#235Lowest Common Ancestor of a Binary Search Tree

Medium·Freq 94%·Acc 0.7%

#251Flatten 2D Vector

Medium·Freq 94%·Acc 0.5%

#269Alien Dictionary

Hard·Freq 94%·Acc 0.4%

#296Best Meeting Point

Hard·Freq 94%·Acc 0.6%

#1206Design Skiplist

Hard·Freq 94%·Acc 0.6%

#323Number of Connected Components in an Undirected Graph

Medium·Freq 94%·Acc 0.7%

#378Kth Smallest Element in a Sorted Matrix

Medium·Freq 94%·Acc 0.6%

#380Insert Delete GetRandom O(1)

Medium·Freq 94%·Acc 0.6%

#407Trapping Rain Water II

Hard·Freq 94%·Acc 0.6%

#1347Minimum Number of Steps to Make Two Strings Anagram

Medium·Freq 94%·Acc 0.8%

#468Validate IP Address

Medium·Freq 94%·Acc 0.3%

#580Count Student Number in DepartmentsSQL

Medium·Freq 94%·Acc 0.6%

#1459Rectangles AreaSQL

Medium·Freq 94%·Acc 0.7%

#585Investments in 2016SQL

Medium·Freq 94%·Acc 0.5%

#586Customer Placing the Largest Number of OrdersSQL

Easy·Freq 94%·Acc 0.6%

#608Tree NodeSQL

Medium·Freq 94%·Acc 0.8%

#2768Number of Black Blocks

Medium·Freq 94%·Acc 0.4%

#831Masking Personal Information

Medium·Freq 94%·Acc 0.6%

#1797Design Authentication Manager

Medium·Freq 94%·Acc 0.6%

#1785Minimum Elements to Add to Form a Given Sum

Medium·Freq 94%·Acc 0.5%

#868Binary Gap

Easy·Freq 94%·Acc 0.7%

#1817Finding the Users Active Minutes

Medium·Freq 94%·Acc 0.8%

#1882Process Tasks Using Servers

Medium·Freq 94%·Acc 0.4%

#1910Remove All Occurrences of a Substring

Medium·Freq 94%·Acc 0.8%

#1905Count Sub Islands

Medium·Freq 94%·Acc 0.7%

#764Largest Plus Sign

Medium·Freq 66%·Acc 0.5%

#1167Minimum Cost to Connect Sticks

Medium·Freq 55%·Acc 0.7%

#	Problem	Difficulty	Frequency↓	Acceptance
#433	Minimum Genetic Mutation2 sources	Medium	100%	0.6%
#42	Trapping Rain Water2 sources	Hard	97%	0.7%
#56	Merge Intervals2 sources	Medium	97%	0.5%
#146	LRU Cache2 sources	Medium	97%	0.5%
#341	Flatten Nested List Iterator2 sources	Medium	97%	0.7%
#355	Design Twitter2 sources	Medium	97%	0.5%
#1348	Tweet Counts Per Frequency2 sources	Medium	97%	0.5%
#1683	Invalid Tweets2 sourcesSQL	Easy	97%	0.9%
#10	Regular Expression Matching2 sources	Hard	94%	0.3%
#12	Integer to Roman2 sources	Medium	94%	0.7%
#20	Valid Parentheses2 sources	Easy	94%	0.4%
#23	Merge k Sorted Lists2 sources	Hard	94%	0.6%
#43	Multiply Strings2 sources	Medium	94%	0.4%
#44	Wildcard Matching2 sources	Hard	94%	0.3%
#60	Permutation Sequence2 sources	Hard	94%	0.5%
#118	Pascal's Triangle2 sources	Easy	94%	0.8%
#140	Word Break II2 sources	Hard	94%	0.6%
#2073	Time Needed to Buy Tickets2 sources	Easy	94%	0.7%
#149	Max Points on a Line2 sources	Hard	94%	0.3%
#161	One Edit Distance2 sources	Medium	94%	0.3%
#202	Happy Number2 sources	Easy	94%	0.6%
#206	Reverse Linked List2 sources	Easy	94%	0.8%
#208	Implement Trie (Prefix Tree)2 sources	Medium	94%	0.7%
#218	The Skyline Problem2 sources	Hard	94%	0.5%
#235	Lowest Common Ancestor of a Binary Search Tree2 sources	Medium	94%	0.7%
#251	Flatten 2D Vector2 sources	Medium	94%	0.5%
#269	Alien Dictionary2 sources	Hard	94%	0.4%
#296	Best Meeting Point2 sources	Hard	94%	0.6%
#1206	Design Skiplist2 sources	Hard	94%	0.6%
#323	Number of Connected Components in an Undirected Graph2 sources	Medium	94%	0.7%
#378	Kth Smallest Element in a Sorted Matrix2 sources	Medium	94%	0.6%
#380	Insert Delete GetRandom O(1)2 sources	Medium	94%	0.6%
#407	Trapping Rain Water II2 sources	Hard	94%	0.6%
#1347	Minimum Number of Steps to Make Two Strings Anagram2 sources	Medium	94%	0.8%
#468	Validate IP Address2 sources	Medium	94%	0.3%
#580	Count Student Number in Departments2 sourcesSQL	Medium	94%	0.6%
#1459	Rectangles Area2 sourcesSQL	Medium	94%	0.7%
#585	Investments in 20162 sourcesSQL	Medium	94%	0.5%
#586	Customer Placing the Largest Number of Orders2 sourcesSQL	Easy	94%	0.6%
#608	Tree Node2 sourcesSQL	Medium	94%	0.8%
#2768	Number of Black Blocks2 sources	Medium	94%	0.4%
#831	Masking Personal Information2 sources	Medium	94%	0.6%
#1797	Design Authentication Manager2 sources	Medium	94%	0.6%
#1785	Minimum Elements to Add to Form a Given Sum2 sources	Medium	94%	0.5%
#868	Binary Gap2 sources	Easy	94%	0.7%
#1817	Finding the Users Active Minutes2 sources	Medium	94%	0.8%
#1882	Process Tasks Using Servers2 sources	Medium	94%	0.4%
#1910	Remove All Occurrences of a Substring2 sources	Medium	94%	0.8%
#1905	Count Sub Islands2 sources	Medium	94%	0.7%
#764	Largest Plus Sign2 sources	Medium	66%	0.5%
#1167	Minimum Cost to Connect Sticks2 sources	Medium	55%	0.7%

Showing 51 of 51 questionsWindow: All Time

X Technical Interview Overview & Company-Wise Questions

Software engineering and technical interviews at X emphasize real-world problem solving, algorithmic efficiency, and scalable data structure design. The curated dataset above contains 51 verified LeetCode problems, categorized by frequency and filtered across recent interview seasons.

Frequently Asked Questions

What are the top LeetCode questions for X?

Leading questions include Minimum Genetic Mutation, Trapping Rain Water, Merge Intervals. Reviewing questions with higher recency (within the last 30 to 90 days) yields the highest return on preparation time.

Where can I practice company-wise LeetCode questions for X?

You can practice all 51 X LeetCode questions right here on LeetMap Pro. Filter by 30-day, 3-month, and 6-month recency, track your progress with local checkpoints, and practice curated SQL problems completely free.

How should I prepare for X coding rounds?

Begin by reviewing Medium-difficulty problems (31 tracked), which constitute the majority of technical rounds. Complement coding practice with foundational DSA patterns like Sliding Window, Two Pointers, and Graph Traversal.

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