LinkedIn Interview Questions 2026 - SWE DSA Prep

Overview

LinkedIn-style rounds frequently include classic coding interview staples, but the selection is often more filtered toward clean, balanced DSA questions rather than overly obscure tricks. A good LinkedIn module should therefore focus on the repeated interview structures: stacks, heaps, trees, graphs, linked lists, and string/array optimization.

Most-asked topics

From LinkedIn-specific sources, the most repeated topics are:articlesLinked listsTrees and BSTGraphsArrays and stringsStack and queueHeapsDynamic programmingBinary searchBacktrackingDesign-style data structure questions

How to prepare

Focus on arrays, strings, linked lists, stacks, heaps, trees, graphs, and DP.i
Practice a mix of medium and hard questions.
Be ready to explain trade-offs and edge cases clearly.
Revise design-style data structures like stack, heap, and randomized collections.

Interview Strategy

LinkedIn interviews often reward strong fundamentals and well-structured code. The question mix from available LinkedIn collections suggests a strong concentration of medium problems, plus a smaller number of hard questions that often involve data structure design or multi-step reasoning..s

LinkedIn-style solving tips

Use hash maps for lookup and counting.

Use recursion for trees and graphs.

Use heaps for ranking and top-K tasks.

Use sliding window for subarray/string problems.

Use DP for sequence and optimization problems.

Use binary search if the input is sorted or the answer is monotonic.

Pattern Map

Recurring patterns you'll see repeatedly in LinkedIn rounds. Master these first.

1

Tree recursion and traversal

2

Graph path finding and ordering

3

Heap for top-K and streaming

4

Stack-based expression and bracket logic

5

Linked list pointer manipulation

6

Array scanning and sliding window

7

DP on sequences and substrings

8

Nested structure traversal and parsing

Interview style	Medium-heavy, practical, high-signal
Top topics	Linked lists, trees, graphs, heaps, design
Best first practice	Traversal, heap, stack, pointer logic, DP
Common traps	Nested structure handling, pointer mistakes, graph cycles
High-value problem types	Design, traversal, ordering, sequence DP
Prep goal	Solve solid interview patterns with strong explanations

Must-Solve Problems

Curated LinkedIn-style problem set — grouped by topic bucket. All links are free on LeetCode.

Arrays and Strings7

Linked List8

Stack and Queue6

Trees and BST8

Graphs7

Heaps5

Dynamic Programming7

Design-style questions5

Backtracking5

Year-Wise Question Trends

The most trustworthy way to present recency for LinkedIn is by trend buckets — not fake exact yearly dates.

2026

2026: recent LinkedIn interview collections and ranked question lists..shadecoder

2025

2025: company-wise lists and curated question dumps.

Evergreen

Older evergreen questions: classic staples that keep reappearing.

Practice Set & Revision Checklist

Use this checklist for last-mile revision — tick items as you clear them.

Linked list manipulationTree recursion and BSTGraph traversal and word ladder style problemsHeap and top-K tasksStack and queue designDP on sequences and gridsDesign-style data structure questionsWalmart Labs interview collections show a strong mix of arrays, strings, linked lists, graphs, heaps, intervals, and dynamic programming, with many questions landing in the medium-difficulty rangeFor your site, Walmart Labs is a great module because it has enough problem variety to support a large list and a very practical prep strategy

LinkedIn Interview Questions & Placement Prep (2026)