Park Plus Senior Software Engineer 3 Interview Questions and Answers

Computer Fundamentals

Q1. Flatten a binary tree
Ans. 
Flatten a binary tree by converting it into a linked list in-place.
• Use a recursive approach to flatten the binary tree.

• Traverse the tree in a pre-order manner and keep track of the previous node.

• Set the left child of each node to null and the right child to the next node in the linked list.

• Example: Input: 1 -> 2 -> 5 -> 3 -> 4 -> null, Output: 1 -> null -> 2 -> null -> 3 -> null -> 4 -> null -> 5 -> null
Answered by AI
Add your answer

2 dsa questions of easy/medium

Q1. Asked two dsa questions of leetcodeeasy/medium
Add your answer

Q1. Asked two dsa questions of leetcode easy/medium
Add your answer

Q1. Asked one dsa question on tree and discussion on resume and dbms os
Add your answer

Q1. Salary Discussion
Add your answer

Q1. Techical questions and coding questions related profile.
Add your answer
Q2. Basic concepts about your programming skills.
Add your answer

Solving normal Puzzles to test aptitude.

Sample app was asked to create.

They have their own coding platform. The questions are basically from tree.

Tree of space question

Q1. Previous round question solution
Add your answer
Q2. System design was asked.
Add your answer

Q1. Delete nth node from end in linked list
Ans. 
To delete the nth node from the end in a linked list, we can use a two-pointer approach.
• Use two pointers, one to traverse the list and another to keep track of the nth node from the end.

• Move the second pointer n steps ahead of the first pointer.

• When the second pointer reaches the end of the list, the first pointer will be at the nth node from the end.

• Adjust the pointers to delete the nth node.
Answered by AI
Add your answer
Q2. Project discussion
Add your answer

Q1. React, React Native Basics
Add your answer
Q2. Coding Arrays & Objects
Add your answer

Easy level Basics were asked

Stacks queue leetcode easy level

Q1. Basic project discussion
Add your answer
Q2. Skills used in project
Ans. 
Used skills include Java, SQL, Spring Boot, RESTful APIs, and Git.
• Java programming for backend development

• SQL for database management

• Spring Boot for creating web applications

• RESTful APIs for communication between systems

• Git for version control
Answered by AI
Add your answer