EngMock Logo
EngMock.com
Hard
GoogleBloomberg

Maximum Value in Every Sliding Window Coding / DSA Interview

Given an array and a window size k, return the maximum value within every contiguous window of size k as it slides from left to right across the array.

Practice in Interview Dashboard

1. Problem Statement

You are given an array of integers and a window size k. Return an array containing the maximum value of every contiguous window of size k as it slides from the start of the array to the end.

2. Live Coding Format

Work in the provided coding workspace while explaining your decisions to the live interviewer. Validation may use inline tests, examples, comments, or a verbal walkthrough.

3. Key Focus Areas

  • 1
    Problem clarification and contract
  • 2
    Approach exploration and optimality
  • 3
    Think-aloud communication and pacing
  • 4
    Implementation correctness
  • 5
    Code quality and language fluency
  • 6
    Handwritten tests and dry run
  • 7
    Debugging and self-correction
  • 8
    Complexity analysis
  • 9
    Follow-up performance

4. What Strong Candidates Should Demonstrate

  • ✓Clarify window size bounds and output length before coding.
  • ✓Explain a per-window rescan baseline and improve to a monotonic decreasing deque.
  • ✓Think aloud while implementing careful deque maintenance.
  • ✓Validate with explicit expected outputs and a top-to-bottom handwritten dry run.
  • ✓Analyze time and space complexity and handle a focused follow-up extension.

Want interactive feedback?

Practice this problem in the live coding workspace while the interviewer probes your clarification, implementation, trade-offs, and validation.

Continue to Dashboard

Core Concepts

Monotonic StacksDequesSliding WindowComplexity Analysis

Continue preparing

Build a complete software engineer mock interview plan

Explore this interview track →View the complete guide →

Prepare by company

Google interview guideMicrosoft interview guide

Related Coding / DSA

Cheapest Route Within a Stop Limit

Given one-way routes between cities each with a cost, find the cheapest total cost from a source city to a destination city using at most k intermediate stops.

Related Coding / DSA

Count Connected Land Regions in a Grid

Given a 2D grid of land and water cells, count the number of distinct connected land regions, where cells are connected horizontally or vertically.