Product of Array Except Self (Leet Code #238)

Day 6 of 100 — tackling Product of Array Except Self (LeetCode #238). My first attempt was a mess — wrong variable, wrong array, wrong everything. But we break down why it failed, walk through the brute force, and then get into the optimal O(n) prefix/suffix approach. First medium level on this channel so far? Learned about REACTO format, so I'll try to approach every problem from that angle.