Carwale Interview Questions, Process, and Tips

4 dsa problems will be easy to do

Q1. Dsa on arrays and strings
Ans. 
DSA on arrays and strings is essential for efficient coding and problem-solving.
• Arrays and strings are fundamental data structures in programming.

• Knowledge of sorting and searching algorithms is crucial for array manipulation.

• String manipulation techniques like substring, concatenation, and comparison are important.

• Dynamic programming is a useful technique for solving problems on arrays and strings.

• Examples: finding th...read more
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Q2. Projects would be explain better
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Q1. Normal profile discussion
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SQL-medium-joins
Python-medium-dictionaries

Coding round on hackerrank platform.

Q1. Technical interview were not much easy. 4 questions were asked. 1) smallest sybarray with sum 0; 2) given two string qwerty and qrw how much time req to type qrw
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Q2. 3) tell me about your self
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Questions from trees and linkedin

Q1. Question on dsa and on oops
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Q2. Reverse linked list with multiple approach
Ans. 
Reverse a linked list using multiple approaches.
• Iterative approach: Use three pointers to reverse the links between nodes.

• Recursive approach: Recursively reverse the rest of the list and adjust the links.

• Stack approach: Push all the nodes onto a stack and then pop them to create the reversed list.
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The test consisted of 4 DSA questions (1 easy, 2 medium, 1 hard) that had to be completed in 2 hours. They were standard questions from Leetcode and the test was similar to Leetcode's weekly coding contest.

Q1. Simple DSA questions like time complexity to insert in a Hash Map, the difference between singly and doubly linked lists, etc.
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Q2. Subarray with sum 0
Ans. 
Find subarray in an array with sum 0
• Iterate through the array and keep track of the running sum

• Store the running sum in a hashmap and check if the same sum has been seen before

• If the sum is 0 or if the running sum is already in the hashmap, a subarray with sum 0 exists
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Q3. Linked List Cycle
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Q4. Rainwater trapping proble
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Q1. Design a database for a blogging website
Ans. 
Database design for a blogging website
• Create tables for users, blog posts, comments, and categories

• Use primary and foreign keys to establish relationships between tables

• Include fields such as title, content, author, date, and tags

• Implement indexing for faster retrieval of data

• Consider implementing a caching mechanism for improved performance
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Q2. What can be done to balance the load of requests coming to a single server
Ans. 
To balance the load of requests on a single server, one can implement load balancing techniques.
• Implementing a load balancer to distribute incoming requests evenly across multiple servers

• Using round-robin algorithm to route requests to different servers in a sequential manner

• Utilizing server health checks to monitor the performance of each server and adjust the load distribution accordingly
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Q1. Design database for my college
Ans. 
Design a database for a college
• Create tables for students, courses, professors, departments, and grades

• Establish relationships between tables using foreign keys

• Include attributes such as student ID, course ID, professor ID, department ID, and grade

• Consider normalization to reduce redundancy and improve data integrity
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Q2. Pseudo code to validate password
Ans. 
Pseudo code to validate password
• Create a function that takes a password as input

• Check if the password meets the required criteria (e.g. length, special characters)

• Return true if the password is valid, false otherwise
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Q3. Strengths and weakness that can affect my profesional life
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Q4. Challenges faced during the projects in my resum and how did I overcome them
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5 questions of medium difficulty level covering topics like queue, dynamic programming, binary search, greedy.

Q1. System design. Using a NoSQL document schema. Design a document store schema to store bike model data.
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Q1. Willing to relocate to Navi Mumbai. Strengths and weekness General process related to my compatibility with the company.
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