Full Stack Engineer

You are given a Generic tree. In this tree, you have to remove all the leaf nodes from the tree and return the root.

Leaf nodes are those nodes that don’t have any children.

Note :

Root Will Also Be A Leaf Node If It Doesn't Have Any Child.

For Example :

For the Given generic tree:

In this Example after removing the leaf nodes - 11, 10, 13, 9. The final answer is 5 2 7 8. Here 2 denotes the number of children 5 has.

Given an unsorted array of integers, you have to move the array elements in a way such that all the zeroes are transferred to the end, and all the non-zero elements are moved to the front. The non-zero elements must be ordered in their order of appearance.

For example, if the input array is: [0, 1, -2, 3, 4, 0, 5, -27, 9, 0], then the output array must be:

[1, -2, 3, 4, 5, -27, 9, 0, 0, 0].

Expected Complexity: Try doing it in O(n) time complexity and O(1) space complexity. Here, ‘n’ is the size of the array.

• What is state management? (Learn)
• What are some common performance optimization techniques?
• What are lifecycle events?

The interviewer showed me a Figma design for a planner and scheduler.
They asked me to create the UI, then implement the frontend and backend logic using MongoDB.

I had to design all the APIs according to the use-case problem statement. For example:

• A work order can be scheduled on a daily, weekly, or monthly basis.
• The scheduling needed to consider conditions like shifts, holidays, weekends, and specific days.
• It also required handling calculations and allotments of slots accordingly.

During the call, the interviewer asked me to explain my approach while writing the code. After solving one step, they kept adding more edge cases and scenarios to handle. This continued for about 1.5 hours, and finally, they asked me to share the complete solution.

• How do you handle pressure?
• What are your hobbies?
• How do you handle conflicts?
• Do you code outside of office work, such as contributing to open source projects?
• What was your most recent open source contribution?
• Explain a challenging problem you faced and how you approached it.
• Do you prefer working from home, hybrid, or from the office?
• Have you worked in a high-paced organization? Can you share an example where you went the extra mile to deliver?