CRED Mechanical Engineer Interview Questions and Answers

Min and max value from an array of integers, reverse of a string

Q1. Data Structures, Algorithms, Understand Common Problem Patterns,
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Q2. Advance Laravel and PHP
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Easy coding questions DSA

Q1. Reverse a linked list
Ans. 
Reverse a linked list by changing the pointers direction
• Start with three pointers: current, previous, and next

• Iterate through the linked list, updating the pointers to reverse the direction

• Update the head pointer to point to the new first node
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Q2. Find middle of linked list
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Q1. Pick from a basket of oranges
Ans. 
The question is asking to pick an orange from a basket.
• Carefully select a ripe orange without any bruises or blemishes

• Gently twist the orange off the stem to avoid damaging the fruit

• Check for firmness and weight to determine ripeness
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It was simple program of url shorting for registered and non registered users each request must have unique shortened url.

Q1. Palindrome implementation and run time
Ans. 
A palindrome is a word or phrase that reads the same backward as forward. Implementing it involves comparing the first and last characters and iterating towards the middle.
• Implement a function that takes a string as input and returns true if it is a palindrome, false otherwise.

• Use two pointers, one starting from the beginning and the other from the end, and compare the characters at each position.

• If the characters matc...read more
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Q2. DSA and various algorithms and run time
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Q1. This round was one on one with VP of engineering. Basic q and a regarding role and responsibilities
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Q1. Relocation, Reason For job change, future plan, careers objective
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Q1. Basic questions on data structures
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Q1. Second round was Managerial Round. The interviewer basically had a conversation with me and asked some hr questions also.
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Q1. Basic HR questions
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They have problem of K sorted array and you need to make an sorted array of it.

Q1. Your current job role
Ans. 
I currently work as a Software Developer, focusing on building scalable web applications and improving user experience.
• Develop and maintain web applications using technologies like React and Node.js.

• Collaborate with cross-functional teams to define project requirements and deliver solutions.

• Implement RESTful APIs to facilitate communication between front-end and back-end systems.

• Conduct code reviews and provide mentors...read more
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Q2. Software Developer
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Scenarios base conding round

Questions on strings in javascript.
Basic javascript and typescript.

Q1. Questions on cloud technologies
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Q1. Cultural fit and salary related discussion
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2hrs aptitude test was there

2 hrs coding test was there

GD was conducted and then i passed it

Round one consist of coding problems and there's a minimum criteria of solving 2 problems at least to clear this round

Q1. First question was a coding question, merge intervals leetcode
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Q2. Second question was again of leetcode, compare strings
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DS, Algo, DP, Greedy, Stack, Heap

Q1. System Design a DropBox
Ans. 
Design a scalable cloud storage system similar to DropBox.
• Use distributed file system for storing files across multiple servers.

• Implement data deduplication to save storage space.

• Use client-side encryption for security.

• Implement file synchronization across devices.

• Utilize load balancing to distribute user requests.

• Implement version control for files.

• Use metadata for efficient file organization.
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Q2. Design a Linked List
Ans. 
A linked list is a linear data structure where each element is a separate object with a reference to the next element.
• Start with a Node class that has data and a reference to the next node

• Create a LinkedList class that manages the nodes and provides methods like insert, delete, and search

• Example: Node class - data, next; LinkedList class - head, insert(data), delete(data), search(data)
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Q1. About yourself. Projects worked upon
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Q2. Why want to join Ocrolus?
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