The selection procedure consisted of an online round followed by two Personal Interviews.
The first round had 20 MCQs and two coding questions. The MCQs were based on the concepts from OS, DSA, compilers, architecture etc.
The coding questions were:
First round of PI :
1. Given a number n find the number of balanced parentheses expressions of that length.
Output: 1 which is (),
Output: 2 which are (()) and ()().
I gave a complex solution involving segment tree in which he pointed out the mistakes and then asked to write a code to check if a given expression is balanced or not.
(Hint : Quite simple..Use doubly LL)
Second round of PI:
The interviewer introduced himself first and then asked me about myself.
We had a discussion on my projects.
1. Given two binary trees, write pseudo code to determine if one is a subtree of the other. I answered it and then he modified the question to check if the other tree elements are the subset of the elements of the first tree. (Hint: Inorder traversal)
2. Given a sorted circular linked list which is rotated at some point, write pseudo code to insert a new node. Ex: 8 1 2 5 7 and insert 6.
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