DSA (1 question): rotate an array k times Android: intent vs activity coroutines vs thread recycler view advantages over Listview Questions asked for my friends: DSA: 1) check if the given number is part of Fibonacci series 2) second largest element from the unsorted array Android: 3) thread vs service 4) experience with crash analytics tools 5) experience with Firebase products 6) how can we handle multithreading in android