Product of Array Except Self
In this video, I solved the LeetCode problem "Product of Array Except Self" using Prefix and Suffix Arrays. Problem: 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 solution must run in O(n) time without using division. Approach: We create: * A prefix array * A suffix array Steps: 1. Prefix array stores the product of all elements before the current index 2. Suffix array stores the product of all elements after the current index 3. Multiply prefix[i] and suffix[i] to get the final answer This efficiently avoids using division. Time Complexity: O(n) Space Complexity: O(n) GitHub Link: https://github.com/Kumar-Aditya-DEV/Leetcode-Questions LeetCode Profile: https://leetcode.com/u/Aditya-Kumar-DEVP/ LinkedIn: https://www.linkedin.com/in/aditya-kumar-060ba6376/ Notes: * Uses Prefix and Suffix Product technique * Very important interview problem * Division operator is not allowed * Easy to understand optimized approach Language: C++ If this helped you, Like, Share and Subscribe for more coding content. #leetcode #cpp #dsa #coding #arrays #prefixsum
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