1p3a Question · Dec 2025

25 Essential Array Coding Problems to Revise Before Tech Interviews

SWE Hard
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Question Details

After posting 25 Graph Problems To Revise Before Interviews, today I've curated 25 carefully selected Array problems covering every major pattern for interviews. Arrays are the most frequently asked t

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About This Question

This is a reported interview question from a google interview for a swe role reported in 2025.

It covers the following topics: Arrays, Backtracking, Binary Search, Dynamic Programming, Graph, Greedy, Hash Table, Heap, Matrix, Queue, Sliding Window, Sorting, Stack, Strings, Two Pointers .

Difficulty rating: Hard

Topics

Arrays Backtracking Binary Search Dynamic Programming Graph Greedy Hash Table Heap Matrix Queue Sliding Window Sorting Stack Strings Two Pointers

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