1st round : HR interview. Very basic questions and set up date for 2nd round of technical interview. 2nd round telephone interview: Maths: (A ∩ B) U C summation from 1 to n summation i=0 to infinity (1/7)^i summation i=1 to infinity (1/i) difference between DFA and NFA pigeonhole principle four color theorem add and multiply o(n) and o(n^2) complexity of matrix multiplication(with an explanation as to why) C/C++/Java/Programming Concepts: OOPS definition and concepts Exception Handling Mechanism typedef #define and const (gave a line of code and asked how it works differently) what is pointer? malloc and its disadvantage difference between foo a; and foo(); diff between .equals and == operator overloading with an example which operators cant be overloaded what is final difference between struct and class Can we start garbage collection in Java, how Java m/c dependent or not JVM m/c dependent or not abstract class hashtable explanation complexities for search operation of linked list, array, binary tree and hashtable. changes when an index is provided They said they will contact in 2 weeks if they are interested in pursuing for next round! Fingers Crossed! :)