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Solution: Product of Array Except Self

Explore how to implement an algorithm in C++ that returns an array where each element is the product of all other elements without using division. Learn two methods: a brute force approach with quadratic time and a more efficient bidirectional accumulation with linear time and constant space complexity.

Statement

You’re given an integer array, nums. Return a resultant array product so that product[i] is equal to the product of all the elements of nums except nums[i].

Write an algorithm that runs in O(n)O(n) time without using the division operation.

Constraints:

  • 22 \leq nums.length 103\leq 10^3
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