Product of Array Except Self

📰 Medium · Python

Learn to solve the Product of Array Except Self problem without division in O(n) time complexity using Python

intermediate Published 22 Apr 2026
Action Steps
  1. Read the problem statement on LeetCode #238
  2. Understand the constraint of not using division
  3. Build a solution using Python that iterates through the array to calculate prefix products
  4. Run the code to calculate the product of all numbers except self for each index
  5. Apply the same approach to calculate suffix products and combine them with prefix products
Who Needs to Know This

This solution benefits software engineers and data scientists who need to optimize array calculations, especially those working on LeetCode challenges or similar problems

Key Insight

💡 Use prefix and suffix product arrays to avoid division and achieve O(n) time complexity

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Solve Product of Array Except Self in O(n) without division!
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