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Ebay Master DSA Sheet

This compilation contains exclusive, previously asked data structure and algorithm questions from real Ebay interviews. Focus on these core problem patterns to confidently tackle even the hardest interview challenges.

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Binary Gap

Easy

Bit Manipulation

Open the Lock

Medium

ArrayBreadth-First SearchHash Table

Jump Game II

Medium

ArrayDynamic ProgrammingGreedy

Valid Parentheses

Easy

StackString

Spiral Matrix6 Months

Medium

ArrayMatrixSimulation

Meeting Rooms II

Medium

ArrayGreedyHeap (Priority Queue)

Top K Frequent Words

Medium

ArrayBucket SortCounting

Design Skiplist

Hard

DesignLinked List

Merge Intervals6 Months

Medium

ArraySorting

Longest Palindromic Substring6 Months

Medium

Dynamic ProgrammingStringTwo Pointers

Time Based Key-Value Store

Medium

Binary SearchDesignHash Table

Design a Stack With Increment Operation

Medium

ArrayDesignStack

Pow(x, n)

Medium

MathRecursion

Longest Substring Without Repeating Characters3 Months

Medium

Hash TableSliding WindowString

Clone Graph

Medium

Breadth-First SearchDepth-First SearchGraph Theory

Generate Parentheses

Medium

BacktrackingDynamic ProgrammingString

Valid Palindrome II

Easy

GreedyStringTwo Pointers

Earliest Possible Day of Full Bloom

Hard

ArrayGreedySorting

Course Schedule

Medium

Breadth-First SearchDepth-First SearchGraph Theory

Binary Tree Cameras30 Days

Hard

Binary TreeDepth-First SearchDynamic Programming

Two Sum30 Days

Easy

ArrayHash Table

Maximal Square

Medium

ArrayDynamic ProgrammingMatrix

Set Matrix Zeroes

Medium

ArrayHash TableMatrix

Number of Islands

Medium

ArrayBreadth-First SearchDepth-First Search

Move Zeroes

Easy

ArrayTwo Pointers

Rotting Oranges

Medium

ArrayBreadth-First SearchMatrix

Walls and Gates

Medium

ArrayBreadth-First SearchMatrix

LRU Cache3 Months

Medium

DesignDoubly-Linked ListHash Table

Word Ladder

Hard

Breadth-First SearchHash TableString

Group Anagrams

Medium

ArrayHash TableSorting

Best Time to Buy and Sell Stock II

Medium

ArrayDynamic ProgrammingGreedy

Partition Equal Subset Sum

Medium

ArrayDynamic Programming

Merge k Sorted Lists

Hard

Divide and ConquerHeap (Priority Queue)Linked List

Sort Colors

Medium

ArraySortingTwo Pointers

Reconstruct Itinerary

Hard

ArrayDepth-First SearchEulerian Circuit

3Sum Closest

Medium

ArraySortingTwo Pointers

Top K Frequent Elements3 Months

Medium

ArrayBucket SortCounting

Word Search

Medium

ArrayBacktrackingDepth-First Search

Find Peak Element

Medium

ArrayBinary Search

Shortest Unsorted Continuous Subarray

Medium

ArrayGreedyMonotonic Stack

Alternating Digit Sum

Easy

Math

Reorganize String

Medium

CountingGreedyHash Table

Sudoku Solver3 Months

Hard

ArrayBacktrackingHash Table

Integer to English Words

Hard

MathRecursionString

Restore the Array From Adjacent Pairs3 Months

Medium

ArrayDepth-First SearchHash Table

Nearest Exit from Entrance in Maze

Medium

ArrayBreadth-First SearchMatrix

Interleaving String6 Months

Medium

Dynamic ProgrammingString

Concatenated Words

Hard

ArrayDepth-First SearchDynamic Programming

Palindrome Linked List6 Months

Easy

Linked ListRecursionStack

Kth Largest Element in an Array

Medium

ArrayDivide and ConquerHeap (Priority Queue)

Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit

Medium

ArrayHeap (Priority Queue)Monotonic Queue

Matchsticks to Square

Medium

ArrayBacktrackingBit Manipulation

Remove One Element to Make the Array Strictly Increasing

Easy

Array

Accounts Merge

Medium

ArrayBreadth-First SearchDepth-First Search

Subtree of Another Tree

Easy

Binary TreeDepth-First SearchHash Function

Find Pivot Index

Easy

ArrayPrefix Sum

Repeated Substring Pattern

Easy

StringString Matching

Sort Array By Parity6 Months

Easy

ArraySortingTwo Pointers

Minimum Window Subsequence

Hard

Dynamic ProgrammingSliding WindowString

Minimize Maximum Pair Sum in Array

Medium

ArrayGreedySorting

Ebay Master DSA Sheet

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