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# Sandvine Interview Experience | On Campus FTE 2021 for Networking Software Developer

Sandvine Technologies visited our campus on September 19th, 2020. The whole process was virtual since this was done in the covid era.

First Round – Online Test: The test was conducted on HirePro platform. The online test consisted of 3 sections. Each were to be done separately, and were even timed separately. We cannot navigate to another section before completing the current section.

The first section consisted of basic aptitude questions, 15 questions to be done in 20 minutes.

The second section consisted of technical questions related to CS subjects like OS, DBMS, CO, CN and output questions from various languages like C, C++, Java, Python. 20 questions were to be done in 40 minutes. Initially it felt like there was a lot of time for this round but I had to scamper around in the end.

The third section was the coding section. Interestingly, we needed to write the code in text editor and not pass test cases by writing it on some IDE. There were 4 questions in this. I did all of them.

1. Given a matrix. Find the difference between the maximum sum and minimum sum that can be obtained by traversing through a straight line in the matrix (either horizontal, vertical or diagonal).

2. Given two trees T1 and T2, find whether T2 is a subtree of T1 or not. ( https://www.geeksforgeeks.org/check-if-a-binary-tree-is-subtree-of-another-binary-tree/ ).

3. Given a string that contains a list of words. Find the words whose length is closest to the average length of all the words provided. Eg: Given string – “Sachin Tendulkar is my favorite batsman”. Avg word length = 35/6 = 5.83 Closest words – {“Sachin”} (it has 6 words, closest to 5.83). Remember, we needed to find all such words.

4. Reversing a doubly linked list – the question was a bit twisted but this is what it wanted.

5 students were selected for the interview from around 200 candidates.