🌟 LeetCode Challenge: Problem 238 - Product of Array Except Self 🌟

The objective is to compute an array where each element is the product of all the elements in the input array except the one at the current index, without using division.

Approach

• Create an answer vector initialized to 1, which will store the result.
• Use a prefix product:

1. Iterate through the input array from left to right.
2. For each index, store the cumulative product of elements before it in the answer vector.

• Use a suffix product:

1. Iterate through the input array from right to left.
2. Multiply each element in the answer vector by the cumulative product of elements after it.

• Return the answer vector as the result.

Key Takeaways

• Avoided using division to handle cases with zero in the array.
• Achieves O(n) time complexity by performing two passes over the input array.
• Requires O(1) additional space, excluding the output array, which is optimal.

A highly efficient solution that elegantly balances complexity and space usage! 💡

#LeetCode #C++ #ArrayManipulation #PrefixSuffix #CodingChallenge