Python Coding Series – Day 8 Daily post of interview-style coding questions & solutions. 📌 Question: Generate the prefix sum of a list (cumulative sum at each position).

𝗣𝗿𝗲𝗳𝗶𝘅 𝗦𝘂𝗺: 𝘁𝗿𝗮𝗱𝗶𝗻𝗴 𝗺𝗲𝗺𝗼𝗿𝘆 𝗳𝗼𝗿 𝘀𝗽𝗲𝗲𝗱 Many DSA problems are slow because we keep recalculating the same totals again and again. Prefix Sum teaches you how to precompute ...