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Product Except Self

Multiply everything except the current element, without division.

MediumArraysPrefix sums

Given an integer array nums, return an array answer where answer[i] is the product of every element of nums except nums[i].

Solve it in O(n) time without using division.

Examples

Example 1
Input
nums = [1, 2, 3, 4]
Output
[24, 12, 8, 6]
Example 2
Input
nums = [-1, 1, 0, -3, 3]
Output
[0, 0, 9, 0, 0]

Constraints

  • 2 <= nums.length <= 10^5
  • -30 <= nums[i] <= 30
  • Every product fits in a 32-bit integer.