Round 1) Questions on multithreading concepts, DS, Core Java. Asked about Spring ( I said I don't have any experience but I'm willing to learn) Round 2) Covered lots of topics - SQL stored procedures, basic queries, SQL injection, Design patterns (explained singleton), some questions on LinkedList and searching, multithreading concepts. round 3) This was HR round where they asked about previous experience, the reason for the change, and some other basic questions.
oops concepts
Asked me questions like : logic to Count number of squares in a chess board logic to traverse and find middle of a list Unix questions Db2 questions SQL questions Data modeling questions
some puzzles
Mainly they asked puzzles, basic c and data structures
Hash map Equal hash code Linked list loop Min heap Threading concurrent package
Some of the questions are : 1. Rotation of an array about any given position in O(n), no extra space. 2. Reverse every k sized sub-arrays of an array of size n (Optimal).
1. Difference between inner and outer join. 2. Detect loop in linked list. 3. 2 candles 45 mins problem. 4. What do you know about this company 5. What do you know about stock markets.
Puzzles
Session management in spring
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