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Striver’s SDE Sheet

SDE Sheet contains very handily crafted and picked top coding interview questions from different topics of Data Structures & Algorithms. These questions are one of the most asked coding interview questions in coding interviews of companies like Google, Amazon, Microsoft, Facebook, Swiggy, Flipkart, etc, and cover almost all of the concepts related to Data Structure & Algorithms.

By Azhar Khan122 problems35 Easy69 Medium18 Hard5 followersUpdated 28 May 2025

Start: Set Matrix Zeroes

122problems

35Easy

69Medium

18Hard

Signed in, the sheet shows which of these you have solved.

Showing 18 of 122 problems · Hard · Clear

TitleSolutionAcceptDifficultyTopics

493. Reverse PairsVideo

Solution35.1%Hard

Array, Binary Indexed Tree +5· 9 companies

25. Reverse Nodes in k-GroupVideo

Solution67.4%Hard

Linked List, Recursion· 27 companies

42. Trapping Rain WaterVideo

Solution68.2%Hard

Array, Dynamic Programming +3· 73 companies

60. Permutation SequenceVideo

Solution54.3%Hard

Math, Recursion· 7 companies

51. N-QueensVideo

Solution76.3%Hard

Array, Backtracking· 16 companies

37. Sudoku SolverVideo

Solution65.4%Hard

Array, Backtracking +2· 17 companies

4. Median of Two Sorted ArraysVideo

Solution47.9%Hard

Array, Binary Search +1· 45 companies

295. Find Median from Data StreamVideo

Solution54.9%Hard

Data Stream, Design +3· 40 companies

460. LFU CacheVideo

Solution50.6%Hard

Design, Doubly-Linked List +2· 32 companies

84. Largest Rectangle in HistogramVideo

Solution50.7%Hard

Array, Monotonic Stack +1· 30 companies

239. Sliding Window MaximumVideo

Solution49.1%Hard

Array, Heap (Priority Queue) +3· 48 companies

987. Vertical Order Traversal of a Binary TreeVideo

Solution54.6%Hard

Binary Tree, Breadth-First Search +4· 15 companies

124. Binary Tree Maximum Path SumVideo

Solution42.7%Hard

Binary Tree, Depth-First Search +2· 25 companies

1373. Maximum Sum BST in Binary TreeVideo

Solution48.9%Hard

Binary Search Tree, Binary Tree +3· 5 companies

297. Serialize and Deserialize Binary TreeVideo

Solution61.1%Hard

Binary Tree, Breadth-First Search +4· 23 companies

1520. Maximum Number of Non-Overlapping SubstringsVideo

Solution65.0%Hard

Greedy, String· 1 company

1547. Minimum Cost to Cut a StickVideo

Solution63.5%Hard

Array, Dynamic Programming +1· 8 companies

1707. Maximum XOR With an Element From ArrayVideo

Solution59.6%Hard

Array, Bit Manipulation +1· 1 company

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