Woodenstreet.com Senior IT Executive Interview Questions and Answers

Q1. Merge 2 Sorted linked list
Ans. 
Merge two sorted linked lists into a single sorted linked list
• Create a new linked list to store the merged result

• Iterate through both input linked lists and compare nodes to determine the order in which they should be merged

• Update the next pointers of the nodes in the new linked list accordingly
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I was attended for technical f2f round for Android app developer, they asked to develop sample app with large json parsing in grid view. It's good and nice.

Q1. Once you successfully implemented coding, they will take technical f2f round. It will mainly in all topics of android.
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Q1. 1. Questions around projects : JWT, UserAuthentication etc
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Q2. 2. Write a code to find frequency of characters in a given string?
Ans. 
Code to find frequency of characters in a given string
• Use a hash table to store character frequencies

• Iterate through the string and update the hash table accordingly

• Print the hash table to display the character frequencies
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Q1. 1. Write a code to reverse a linked list?
Ans. 
Code to reverse a linked list
• Create three pointers: prev, curr, and next

• Initialize prev to null and curr to head

• Loop through the list and set next to curr's next node

• Set curr's next node to prev

• Move prev and curr one node ahead

• Return prev as the new head
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Q2. 2. Write a code to reverse linked list in size of K?
Ans. 
Code to reverse linked list in size of K
• Create a function that takes head of linked list and size K as input

• Traverse the linked list in groups of K nodes

• Reverse each group of K nodes using iterative or recursive approach

• Connect the reversed groups to form the final linked list

• Return the new head of the reversed linked list
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Q3. 3. Questions around project and design a database structure for comments system of quora?
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Q1. Basic HR round questions
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50 questions in 12mins

Q1. Basic DSA question in binary search and memoization
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Given an simple gaming questions to be developed in JS

Given another UI design in image to be developed

Q1. Medium level SQL question
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Q2. Case study on Bigbasket/Instagram
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Prepare basics such as group by, case functions, aggregation and some theoretical part such as sequence of sql query execution, basic concepts of dbms

Case study on analytics side like think like a product analyst and define metrics for a feature for example feature that count your daily steps.

Q1. Culture related Queries
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Q2. Salary expectations and negotiation deal
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Q1. About your self with experience??
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Q2. About your skills in brief
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