Online Assessment:

1. https://www.geeksforgeeks.org/find-minimum-difference-pair
2. https://brainly.in/question/5530464
3. 28 MCQs based on Data Structure, Algorithm and C programming

Interview (Round 1):

1. https://www.geeksforgeeks.org/box-stacking-problem-dp-22
2. https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array

Interview (Round 2):

1. https://leetcode.com/problems/find-k-pairs-with-smallest-sums/ (Arrays was not sorted, in my case)
2. Check if a node exists in a complete tree Possibly solve in O(log(n)) complexity.

Interview (Round 3):

1. https://www.geeksforgeeks.org/print-the-last-k-nodes-of-the-linked-list-in-reverse-order/
2. https://www.geeksforgeeks.org/shortest-distance-between-two-nodes-in-bst/
3. https://www.techiedelight.com/distance-between-given-pairs-of-nodes-binary-tree/
4. https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree/
5. https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree/
6. Computer Science Fundamentals (Threading, Critical Section Problem, Semaphor, Hash Mapping Techniques etc)

Interview (Round 4 | Bar Raiser Round) :

1. https://leetcode.com/problems/trapping-rain-water (Possibly O(1) space and 1 pass solution)
2. Discussion about projects. Typical question after question in related topics.
3. https://leetcode.com/problems/evaluate-division

I GOT SELECTED. :)