Maximum Product Subarray Interview Question | Array & Dynamic Programming

Given an integer array, find the contiguous subarray within the array
which has the largest product.

Example:
Input: [1, 2, -4, 1, 3, -2, 3, -1]

Explanation:
2 * (-4) * 1 * 3 * (-2) * 3 = 48

This is a classic array problem that frequently appears in interviews, with tricky edge cases caused by negative numbers. The key challenge lies in handling sign changes that can flip maximum and minimum products. Interviewers use this question to evaluate a candidate’s reasoning process, adaptability, and ability to explain dynamic decision-making clearly during live interviews.

VOPrep’s team has long accompanied candidates through real OA and VO interviews at top tech and finance companies, including OpenAI, Google, Amazon, Citadel, and SIG. We provide live interview assistance and proxy interview support, helping candidates maximize their chances of securing offers.

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