HackerRank Intern Interview Questions and Answers

1 hr test on HackerEarth platform, DSA questions

Q1. The first round was a detailed discussion on one of my previous projects(almost 35 minutes, went to maximum possible depth) and one DSA question. Please prepare your resume projects very well.
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Q2. The question was a stack bases leetcode medium question.
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Q1. This was the final round. It again a follow up of the first one. Started with a project discussion(did not go that much of depth as first one) . Again one DSA question was there to solve(they make you writ...read more
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There is 4 coding question all are on DSA.

They give one topic. and provide 10 to 15 minutes to think.

Q1. He is giving one coding question. ask some language questions.
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Q1. DSA question and databases question
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Q2. SQL question, stack, queue, and LinkedList are all the things we know from the scretch
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Q1. They introduce the company details and normal question
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Q1. Tell me about yourself
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Q2. What is the job culture of zopsmart
Ans. 
The job culture at Zopsmart is collaborative, innovative, and fast-paced.
• Collaborative work environment where team members support and help each other

• Emphasis on innovation and creativity in problem-solving

• Fast-paced atmosphere with opportunities for growth and learning

• Open communication and feedback encouraged

• Diverse and inclusive workplace culture
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Medium level leetcode problem

Q1. Question on anagram whether we can form with given strings
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Q2. Play random song from list without repetition
Ans. 
Use Fisher-Yates shuffle algorithm to play songs randomly without repetition.
• Create an array of songs

• Use Fisher-Yates shuffle algorithm to shuffle the array

• Play the first song in the shuffled array

• Remove the first song from the array

• Repeat steps 3-4 until all songs have been played
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Q3. Reverse the linked list
Ans. 
Reverse a linked list
• Iterate through the linked list and change the direction of the pointers

• Keep track of the previous, current, and next nodes

• Set the head of the linked list to the last node after reversing
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Q4. Range sum with the queries
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Q5. Hashing on 2d matrix counting max 1
Ans. 
Hashing algorithm to count maximum number of 1s in a 2D matrix.
• Create a hash table to store the count of 1s in each row.

• Traverse through each row and update the count in the hash table.

• Find the row with the maximum count of 1s in the hash table.

• Return the count of 1s in that row.
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Q6. React interviews hooks
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Q1. Linux commands,
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Q2. Cloud technologies different services (iaas, paas, saas)
Ans. 
Cloud technologies offer different services like IaaS, PaaS, and SaaS for varying levels of control and management.
• IaaS (Infrastructure as a Service) provides virtualized computing resources over the internet, such as virtual servers and storage.

• PaaS (Platform as a Service) offers a platform allowing customers to develop, run, and manage applications without dealing with infrastructure.

• SaaS (Software as a Service) deli...read more
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Q3. What do you know AWS
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There was coding test

Q1. 2 technical rounds
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Q2. Merge sort algorithm
Ans. 
Merge sort is a divide and conquer algorithm that divides the input array into two halves, sorts them separately, and then merges them back together in sorted order.
• Divide the input array into two halves

• Recursively sort each half

• Merge the sorted halves back together
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Q1. Leetcode Easy question
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