50 questions · from 3 interviews
Park+ interview questions
Every question candidates reported from their Park+ interviews, most frequently asked first. Each links to the write-up it came from, so you can see the round and how it went.
Park+ coding and DSA questions
- 01
Design 2048 Game
Design the core logic and functions for the 2048 game. The interviewer was not looking for a full implementation but an understanding of how to break down the problem into smaller, manageable functions.
From Park+ | SDE -1 (Intern + FTE ) | On - Campus | IIT | Worst Experience Ever | 2023
- 02
Find Duplicate Characters in a String
Given a string, return all duplicate characters present in the string.
Easy · From Park+ | SDE -1 (Intern + FTE ) | On - Campus | IIT | Worst Experience Ever | 2023
- 03
Reverse Pairs
Given an integer array nums, return the number of reverse pairs in the array. A reverse pair is a pair (i, j) where 0 2 nums[j].
Hard · From Park+ | SDE -1 (Intern + FTE ) | On - Campus | IIT | Worst Experience Ever | 2023
- 04
Maximum Subarray
Given an integer array nums, find the subarray with the largest sum, and return its sum.
Medium · From Park+ | SDE -1 (Intern + FTE ) | On - Campus | IIT | Worst Experience Ever | 2023
- 05
Maximum Sum Circular Subarray
Given a circular integer array nums of length n, return the maximum possible sum of a non-empty subarray of nums.
Medium · From Park+ | SDE -1 (Intern + FTE ) | On - Campus | IIT | Worst Experience Ever | 2023
- 06
Solve Sudoku
Given a partially filled 9x9 Sudoku grid, solve it by filling the empty cells such that the rules of Sudoku are satisfied.
Hard · From Park+ | SDE -1 (Intern + FTE ) | On - Campus | IIT | Worst Experience Ever | 2023
- 07
Populating Next Right Pointers in Each Node
Given a perfect binary tree where all leaves are on the same level, and every parent has two children. Populate each next pointer to point to its next right node. If there is no next right node, the next pointer should be set to NULL. Initially, all next…
Medium · From Park+ | SDE -1 (Intern + FTE ) | On - Campus | IIT | Worst Experience Ever | 2023
- 08
Decode String
Given an encoded string, return its decoded string. The encoding rule is: k[encodedstring] , where encodedstring inside the square brackets is being repeated exactly k times. Note that k is guaranteed to be a positive integer. You may assume that the input…
Medium · From Park+ SDE interview Experience
- 09
Partition String into Disjoint Substrings
Given a string, find the number of parts such that no two parts have common characters. For example, Input: ababcbacadefegdehijhklij , Output: 3 (parts: ababcbaca , defegde , hijhklij ).
- 10
Largest BST in Binary Tree
Given a binary tree, find the size of the largest Binary Search Tree (BST) within it.
- 11
Merge Two Sorted Arrays In-Place
Given two sorted arrays of integers, Arr1 (size N) and Arr2 (size M), sort them in-place such that Arr1 contains the first N smallest elements and Arr2 contains the remaining M elements. For example, if Arr1 = [1, 3, 5, 7] and Arr2 = [2, 4, 6, 8, 9] , the…
Park+ system design questions
- 01
Design Parking Management System
Design a parking management system for malls and buildings.
Park+ other questions
- 01
HTML Full Form and Usage
What is the full form of HTML? What is it used for?
Easy · From Park+ | Frontend Intern | Virtual
- 02
- 03
Distinguish HTML Tags vs Elements
Explain the difference between HTML Tags and Elements.
Easy · From Park+ | Frontend Intern | Virtual
- 04
HTML Head and Meta Tags Concepts
Explain the concepts of Head tags and Meta tags in HTML.
Easy · From Park+ | Frontend Intern | Virtual
- 05
CSS Full Form and Purpose
What is the full form of CSS? What is its purpose?
Easy · From Park+ | Frontend Intern | Virtual
- 06
- 07
CSS Flexbox and Box Model Concepts
Explain the concepts of Flexbox and Box Model (Margin Box) in CSS.
Medium · From Park+ | Frontend Intern | Virtual
- 08
- 09
JavaScript Variable Declarations (var, let, const)
Explain variable declarations ( var , let , const ) and their differences in JavaScript.
Medium · From Park+ | Frontend Intern | Virtual
- 10
JavaScript Concepts: Promises, Event Loop, TDZ, Callback, Closure, Hoisting
Explain the concepts of Promises, Event Loop, Temporal Dead Zone, Callback, Closure, and Hoisting in JavaScript.
Hard · From Park+ | Frontend Intern | Virtual
- 11
React Props and DOM vs Virtual DOM
Explain Props in React and the difference between DOM vs Virtual DOM.
Medium · From Park+ | Frontend Intern | Virtual
- 12
React Hooks: useState, useEffect, useMemo, useCallback
Explain the usage and concepts of React Hooks: useState , useEffect , useMemo , useCallback .
Medium · From Park+ | Frontend Intern | Virtual
- 13
Why Use React Over Vanilla JS
Why use React over vanilla JavaScript?
Medium · From Park+ | Frontend Intern | Virtual
- 14
Build To-Do List App with CRUD
Build a basic To-Do List app implementing CRUD functionality.
Medium · From Park+ | Frontend Intern | Virtual
- 15
RDBMS, Primary Key, and SQL Table Creation
Explain what an RDBMS is and define a Primary Key. Then, write an SQL query to create a table named students with columns Rollno (INTEGER, Primary Key), Name (VARCHAR), and Email (VARCHAR).
Easy · From Park+ | SDE -1 (Intern + FTE ) | On - Campus | IIT | Worst Experience Ever | 2023
- 16
SQL Query: Max Salaried Person per Department
Given an employee table, write an SQL query to find the name of the person with the maximum salary from each department.
Medium · From Park+ | SDE -1 (Intern + FTE ) | On - Campus | IIT | Worst Experience Ever | 2023
- 17
Explain Current Project Architecture
Explain the architecture of your current project.
- 18
Multiple and Multilevel Inheritance
Explain the concepts of multiple and multilevel inheritance.
- 19
Function Overloading and Overriding
Explain the concepts of function overloading and overriding.
- 20
Output of Function Overloading Code
Determine the output of provided example codes related to function overloading.
- 21
Primary and Composite Key
Explain what primary and composite keys are in a database.
- 22
- 23
Exception Handling
How is exception handling done? Can you create your own custom exceptions?
- 24
- 25
Department Wise Total Salary
Write an SQL query to find the department and department-wise total salary, displaying it in ascending order of salary.
13 more in the Park+ write-ups.
Park+ interview questions FAQ
What questions are asked in Park+ interviews?
Candidates reported 50 distinct questions across 3 Park+ interviews. 11 coding and DSA questions, 1 system design questions, 38 other questions.
How difficult are Park+ interview questions?
Of the questions candidates rated, 39% were easy, 48% medium and 13% hard.