Position: SDE1\n\nInput is in <productId, timeStamp> format. So assume you have a list of productIDs and their timestamps which they were accessed:\n\n[<product1, timestamp1>, <product2, timestamp2>, <product3, timestamp3>, ...]\n\nFind the top K products purchased in the last one hour.

Position: SDE1\n\nInput is in  format. So assume you have a list of productIDs and their timestamps which they were accessed:\n\n[, , , ...]\n\nFind the top K p