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Teachmint Interview Questions and Answers
13 Interview questions
React is a JavaScript library for building user interfaces, focusing on component-based architecture and state management.
React uses components to encapsulate UI logic and rendering. Example: <MyComponent />.
State management is crucial; use 'useState' for local state. Example: const [count, setCount] = useState(0).
Props are used to pass data to components. Example: <MyComponent name='John' />.
React's l...
Find the longest consecutive sequence of numbers in an array.
Sort the array to make it easier to identify consecutive numbers
Iterate through the sorted array and keep track of the current consecutive sequence length
Update the longest consecutive sequence length as you iterate
Find the k most frequent elements in an integer array using a frequency map and a heap.
Use a hashmap to count the frequency of each element. Example: nums = [1,1,1,2,2,3], frequency map = {1:3, 2:2, 3:1}.
Use a min-heap to keep track of the top k elements based on frequency. Example: for k=2, heap will contain [2, 1].
Extract elements from the heap to get the k most frequent elements. Example: output = [1, 2].
Consid...
Optimizing 2 tables involves identifying and implementing strategies to improve performance and efficiency.
Identify and remove any unnecessary columns or rows
Normalize the tables to reduce redundancy
Index frequently queried columns for faster retrieval
Use appropriate data types to minimize storage space
Optimize queries by using appropriate joins and filters
Design a system for generating report cards with dynamic class/subjects
Create a database to store student information, class details, and subject details
Allow users to input class details and subjects for each class dynamically
Design a template for report cards that can be customized based on class and subjects
Implement a feature to generate report cards based on the selected class and subjects
Include options for ...
Design a communication system for chat/notifications
Use a real-time messaging protocol like WebSocket for chat functionality
Implement push notifications for notifications to keep users updated
Include features like read receipts, typing indicators, and message history
Consider implementing message encryption for security
Allow users to customize notification settings for different types of messages
A balanced tree is a tree where the heights of the two subtrees of every node never differ by more than 1.
Traverse the tree and calculate the height of each subtree
Check if the heights of the left and right subtrees differ by more than 1
Repeat the process for all nodes in the tree
Product management allows me to blend my passion for technology with my strategic and creative skills to deliver innovative solutions.
I enjoy the challenge of identifying market opportunities and translating them into successful products
I thrive in cross-functional collaboration, working closely with engineering, design, and marketing teams
I am driven by the opportunity to make a meaningful impact on users' lives ...
Find the longest sequence of consecutive numbers in an array of strings.
Iterate through the array and keep track of the current sequence length
Update the longest sequence length as you iterate
Handle edge cases like non-numeric strings or empty arrays
Example: ['1', '2', '3', '5', '6', '7'] -> Longest sequence: 3
Find the maximum sum of a subarray within an array of integers.
Use Kadane's algorithm to find the maximum sum subarray in O(n) time complexity.
Initialize max_sum and current_sum variables to track the maximum sum subarray.
Iterate through the array and update current_sum by adding the current element or starting a new subarray.
Update max_sum if current_sum is greater than max_sum.
Return max_sum as the result.
Teachmint Interview Experiences
28 interviews found
Anonymous
I applied via Campus Placement
Pizza restaurant app
(2 Questions)
- Q1. Asked about javascript questions
- Q2. Asked about react fundamentals
- Ans.
React is a JavaScript library for building user interfaces, focusing on component-based architecture and state management.
React uses components to encapsulate UI logic and rendering. Example: <MyComponent />.
State management is crucial; use 'useState' for local state. Example: const [count, setCount] = useState(0).
Props are used to pass data to components. Example: <MyComponent name='John' />.
React's lifecy...
(1 Question)
- Q1. Round was more about cultural fit with co founder
manoj singh thapa
Simple Assignment based on one or two SPI calls, two screens details and list screen, can be completed in 2 day. They review architecture and coding style
(2 Questions)
- Q1. Android fundamentals
- Q2. Kotlin and third party libraries
(2 Questions)
- Q1. Friendly questions and negotiations
- Q2. Some questions about hobby and all
Interview Preparation Tips
(2 Questions)
- Q1. Search in a sorted rotated array
- Ans.
Search for a target value in a sorted rotated array.
Use binary search to find the pivot point where the array is rotated.
Determine which half of the array the target value may lie in based on the pivot point.
Continue binary search in the appropriate half of the array to find the target value.
- Q2. Check if a tree is balanced
- Ans.
A balanced tree is a tree where the heights of the two subtrees of every node never differ by more than 1.
Traverse the tree and calculate the height of each subtree
Check if the heights of the left and right subtrees differ by more than 1
Repeat the process for all nodes in the tree
(1 Question)
- Q1. Design a report card generation system with dynamic class/subjects
- Ans.
Design a system for generating report cards with dynamic class/subjects
Create a database to store student information, class details, and subject details
Allow users to input class details and subjects for each class dynamically
Design a template for report cards that can be customized based on class and subjects
Implement a feature to generate report cards based on the selected class and subjects
Include options for teach...
(1 Question)
- Q1. Design a communication system for chat/notifications
- Ans.
Design a communication system for chat/notifications
Use a real-time messaging protocol like WebSocket for chat functionality
Implement push notifications for notifications to keep users updated
Include features like read receipts, typing indicators, and message history
Consider implementing message encryption for security
Allow users to customize notification settings for different types of messages
(1 Question)
- Q1. Manegerial round
Interview Preparation Tips
Skills evaluated in this interview
I appeared for an interview in Apr 2025, where I was asked the following questions.
- Q1. Data Warehousing Concepts
- Q2. SQL questions on Self joins
(2 Questions)
- Q1. Queston on SQL queries and data aggregation
- Q2. Question on python numpy and pandas
I applied via Recruitment Consulltant and was interviewed in Jul 2024. There was 1 interview round.
(2 Questions)
- Q1. Android architecture mvvm mvc kotlin
- Q2. Coroutines flows
Selected
I applied via Coding ninjas and was interviewed before Nov 2023. There were 3 interview rounds.
Pizza restaurant website
(2 Questions)
- Q1. Javascript related questions
- Q2. React fundamentals and redux and saga function
(1 Question)
- Q1. Round with CEO for culture fit
I was asked to build an in-classroom learning experience app. It was a product design question.
I applied via Naukri.com and was interviewed in Sep 2023. There were 3 interview rounds.
Python/Django based task to create split wise application
(3 Questions)
- Q1. Binary search algorithm
- Ans.
Binary search is a divide and conquer algorithm that efficiently finds the target value within a sorted array.
Divide the array in half and compare the target value to the middle element
If the target value is less than the middle element, search the left half of the array
If the target value is greater than the middle element, search the right half of the array
Repeat the process until the target value is found or the sub...
- Q2. Maximum sum of sub array
- Ans.
Find the maximum sum of a subarray within an array of integers.
Use Kadane's algorithm to find the maximum sum subarray in O(n) time complexity.
Initialize max_sum and current_sum variables to track the maximum sum subarray.
Iterate through the array and update current_sum by adding the current element or starting a new subarray.
Update max_sum if current_sum is greater than max_sum.
Return max_sum as the result.
- Q3. Longest sequence series
- Ans.
Find the longest sequence of consecutive numbers in an array of strings.
Iterate through the array and keep track of the current sequence length
Update the longest sequence length as you iterate
Handle edge cases like non-numeric strings or empty arrays
Example: ['1', '2', '3', '5', '6', '7'] -> Longest sequence: 3
Interview Preparation Tips
Skills evaluated in this interview
SHAKTI UPADHYAY
(1 Question)
- Q1. Tell me about yourself
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