Landmark Group Qe Software Engineer Interview Questions and Answers

1.Sum numbers in linked list
2. Maximum sum subarray

Q1. Design and code hashmap.
Ans. 
Implement a hashmap data structure in code.
• Use an array to store key-value pairs

• Implement a hash function to map keys to indices in the array

• Handle collisions using techniques like chaining or open addressing
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Q2. Questions on kafka
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Q1. Design linked in
Ans. 
Design a platform similar to LinkedIn for professional networking.
• Create user profiles with work experience, education, skills, and endorsements.

• Allow users to connect with others, join groups, and follow companies.

• Include features like job postings, messaging, news feed, and recommendations.

• Implement algorithms for personalized content and job suggestions.

• Ensure data privacy and security measures are in place.
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3 sum problem was asked to complete

Take home project to design app

Good question but very simple to answer

Q1. Cooding question
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Q2. About project you did in colly
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Q1. Array, Tree based questions
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Q1. Managerial round with a dive into the projects
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Q1. Laravel based questions
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Q1. Basic questions
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Q1. Linked List Intersection Point
Ans. 
Find the intersection point of two linked lists.
• Use two pointers to traverse the linked lists

• Calculate the difference in length between the two lists

• Move the pointer of the longer list ahead by the difference

• Move both pointers simultaneously until they meet at the intersection point
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Q2. Basic Spring Boot
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Q3. Stream and Java 8 Questions
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Q1. System Design Questions, Situation based problems of system design
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Q2. Data Structure Coding question of HashMap
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Q1. Again System design, Question from your project and architecture of your project
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Q1. Linked list implementation with second largest and second smallest
Ans. 
Implement a linked list with methods to find the second largest and second smallest elements.
• Create a linked list class with methods to insert elements, find second largest, and find second smallest.

• Traverse the linked list to find the largest and smallest elements, then find the second largest and second smallest.

• Handle edge cases such as empty list or lists with less than 2 elements.

• Consider using a priority queue to...read more
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Q2. Max Frequency Character in a string
Ans. 
Find the character with the highest frequency in a given string.
• Iterate through the string and count the frequency of each character using a hashmap.

• Track the character with the highest frequency as you iterate.

• Return the character with the highest frequency at the end.
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Q3. Longest common subsequence print
Ans. 
Find and print the longest common subsequence in an array of strings
• Use dynamic programming to find the longest common subsequence

• Iterate through the array of strings to find common characters

• Print the longest common subsequence found
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Q1. Solid design principles
Ans. 
Solid design principles are fundamental guidelines for designing software that is maintainable, scalable, and efficient.
• Follow the SOLID principles (Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, Dependency Inversion)

• Use design patterns like Factory, Singleton, Observer, etc. to solve common design problems

• Keep code modular, reusable, and easy to understand

• Separate concerns and avoid ti
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Q2. Snake and Ladder LLD
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Q3. Executor Service
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