# Find the minimum window substring — Aced

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Source: https://www.aced.io/questions/1687/minimum-window-substring
Source observed: 2026-11-04T22:21:37.496Z
Last checked: 2026-11-04T22:21:37.496+00:00
Indexed: 2026-11-05T19:44:22.881+00:00

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# Find the minimum window substring.

**Difficulty:** Medium  
**Category:** [Data Structures & Algorithms](https://www.aced.io/questions?type=algorithms) · [Coding](https://www.aced.io/questions?type=coding)  
**Reported last asked:** 8 months ago  
**Interview count:** 6  
**Roles:** [Software Engineer](https://www.aced.io/questions?role=swe)  
**Companies:** [Google](https://www.aced.io/questions?company=google), [Tesla](https://www.aced.io/questions?company=tesla), [Airbnb](https://www.aced.io/questions?company=airbnb), [Oracle](https://www.aced.io/questions?company=oracle), [Hubspot](https://www.aced.io/questions?company=hubspot), [Dropbox](https://www.aced.io/questions?company=dropbox)

Aced, formerly Exponent, provides interview-preparation materials. This page is a coding-question entry for the “minimum window substring” problem. Our detailed video answer is available through [Upgrade](https://www.aced.io/upgrade?src=questions).

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Lewin, a Dropbox software engineer, answers the minimum window substring interview question.

## Interview experiences

**1 shared experience**

- **[Google · 8 months ago](https://www.aced.io/experiences/google-software-engineer-interview-d87459)** — “overall smooth. Learned that they really care about full line by line understanding not just throwing things at the wall and what sticks.”  
  **Role:** Software Engineer · Entry Level / L3

## Community answers

No answers have been contributed by the community yet.

## Related questions

- [Find the minimum sum subarray of size k.](https://www.aced.io/questions/1122/minimum-sum-subarray-size-k)
- [Find the longest repeating substring.](https://www.aced.io/questions/1170/longest-repeating-substring)
- [Find the maximum subarray sum.](https://www.aced.io/questions/973/maximum-subarray-sum)

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Land your dream software engineering role at Google, Amazon, Microsoft, Meta, Apple, and other top companies. Learn from mock interviews, frameworks, and advice from senior candidates. Practice data structures, algorithms, system design, people management, behavioral interviews, and more.

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Learn how to answer the latest system design questions across product, infrastructure, and AI domains. We provide in-depth video examples, written breakdowns, and reference patterns, including mock-interview answers from senior engineers and managers.

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