clarity-in-code.hashnode.devTwo PointersWhy Do We Even Need Two Pointers? When we first learn arrays, our brain naturally jumps to nested loops. Want to find a pair?Use two loops. Want to compare elements?Two loops. Works? Yes.Efficient? Not really. If an array has 10,000 elements, O(n²) m...Feb 14·3 min read
clarity-in-code.hashnode.devBinary Search Is Not Just Searching — It’s Eliminating Half the Answer SpaceWhy Did We Need It When Linear Search Already Existed? When I first learned Binary Search, I had one very honest doubt: If Linear Search already works… why did we even invent Binary Search? I mean, Linear Search goes through elements one by one. It...Feb 14·7 min read