Guavus Software Developer interview questions

Telephonic : 1) Checked n Unchecked exception 2) garbage collection in java 3) comparable and comparator 4) serializable n externalizable 5) transcend 6) interface can be final ? 7) abstract class 8) static 9) 2 Linked list questions and many more core java questions Round 1: 1) Code for singleton implementaion 2) Loop in linked list 3) producer n consumer problem( threads) code there were 3-4 more easy question on data structure to code Round-2 1) vertical sum of binary tree 2) implement stack with queue 3) given very large file, find the duplicate lines in it. 4) a codeing question from hackerrank , gave me his laptop to read the question from that and code . 5) question on lnked list i dont rember Round-3: 1) project disscussion , the person had good knowledge and had a good deep discussion on my projects 2) Some tree question , i dont rember 3) Some DP question , dont rember. Round-4: 1) Again discussion on project , the person had good knowledge about different technologies, discussion went on for about 30-40 min on different design patterns and all. 2) question to form a structure with given bricks. Final telephonic round : 1) brief discussion about previous job 2) puzzle - scooter with 3 tyres , how far it can go . asked to generalize it . one way was to add the life of each tyre and divide by 2 but that doesn't work in for 1,1,10 so before genarlizing the solution corner cased need to be addressed. 3) Given a Dictionary , find the anagrams of a word in constant time.