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Problem: Product of Array Except Self

Understand how to compute the product of all elements in an array except the current one using prefix and suffix products. This lesson teaches you to implement a two-pass algorithm that solves the problem in linear time without using division, optimizing both time and space efficiently.

Statement

Given an integer array nums, return an array answer where answer[i] represents the product of all elements in nums except nums[i].

You must design an algorithm that operates in O(n)O(n) time complexity and does not use the division operation.

Note: The product of any prefix or suffix of nums is guaranteed to fit in a 3232-bit integer.

Constraints:

  • 22 \leq nums.length 105\leq 10^5 ...