How to Solve Product of Array Except Self Problem
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Product of Array Except Self
Given an integer array nums, return an array answer such that answer[i] is equal to the product of all the elements of nums except nums[i]. The product of any prefix or suffix of nums is guaranteed to fit in a 32-bit integer. You must write an algorithm that runs in O(n) time and without using the division operation. Example 1: Example 2: Constraints: Follow up: Can you solve the problem in O(1) extra space complexity? (The output array does not count as extra space for space complexity analysis.)
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Understanding the Product of Array Except Self Problem
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Problem Statement
Given an integer array nums, return an array answer such that answer[i] is equal to the product of all the elements of nums except nums[i]. The product of any prefix or suffix of nums is guaranteed to fit in a 32-bit integer. You must write an algorithm that runs in O(n) time and without using the division operation. Example 1: Example 2: Constraints: Follow up: Can you solve the problem in O(1) extra space complexity? (The output array does not count as extra space for space complexity analysis.)
Product of Array Except Self
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Examples
# Example 1
nums = [1,2,3,4]
[24,12,8,6]
# Example 2
nums = [-1,1,0,-3,3]
[0,0,9,0,0]
Constraints
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Solve Product of Array Except Self — Given an integer array nums, return an array answer such that answer[i] is equal...
Here's the optimal approach using Array:
Time: O(n) | Space: O(n)
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