Question in test: 1. Decimal Equivalent of Binary Linked List 2. lastStoneWeight 3. getUmbrella In data structure : 1. Given a m x n matrix, if an element is 0, set its entire row and column to 0. 2. Stock Buy Sell to Maximize Profit In technical (IOS) : 1. implement dispatch group 2. implement memoization 3. @escaping, @non-escaping, @autoclosure 4. Output of code related to struct 5. Output of code related to weak and unowned 6. Output of optional with nil value In design : 1. design a book reading app
