Veritas visited our college for campus hiring. The selection process included aptitude tests, 2 tech interviews, and an HR interview.
The aptitude test was on hackerrank. It had 20 MCQs based on cs concepts (database:btree, os, HTML form one que), basic math (no of solutions for p^2 = n+q^2 ), etc and 2 coding questions. There was negative marking for MCQs and solving one coding question was important.
1st tech interview (1Hr):
They asked me which languages I am comfortable with. I chose C and Java.
- Reverse a singly linked list.
- Implementation of strlen function in string.h
- Implementation of strcmp using pointer
- OOPs concepts with explanation and example
- Storage classes in C
- Access specifiers in Java
- Difference between string and char array in c.
- bubble sort code
- Function with variable length arguments
- Function overloading error: what will happen if overloaded functions have same arguments but different return type
- delete a node in linked list given a pointer to the node(node is not tail)
- References in java
- Collection classes
- rval, lval
- Have you done any system level coding. I said assembler program and compiler theory.
- Abstract classes and interface difference.
- Why main is not private in Java?
- How to given arguments to program while running it?
Ans: cmd line arguments can be accepted as strings - Puzzle: 10 coins are given. one coin has less weight. find the coin in 3 iterations.
2nd tech interview (1hr 15 min):
They asked my favourite topics. I said Data structures and DBMS.
- basic python questions strcmp
- Function is given string arguments which are names of function of a class call those functions from this function. eg. consider function as fun(method1,method2) and class is c so fun should call method1 of class c.
I didn’t know the answer. - Inorder tree traversal using recursion and iterative.
- Data structures for BFS, DFS.
- Given an array of elements (millions of elements) return the second highest occurring element.
- you are given a string say “this is a book” and reverse function and output should be “book a is this”
Ans:reverse string and then reverse every word. - Order of compilation, relocation, linking and loading
Examples of polymorphism - Which data structure can be used to reverse words in file?
int arr[5]; printf(“%u%u”,arr+1,&arr+1); output?
They asked me if I knew Perl. I said no.
HR interview:
Background, Areas of interests(technical), Why Veritas?, What do you know about Veritas?
Finally, they selected 9 people out of 29 and I was one of them.
Thanks to GeeksforGeeks!!!!