Thomas Cook Associate Engineer Interview Questions and Answers

Numbers and patterns

Q1. Data Structures and Theoretical Java and SQL concepts like - views, indexes, DML
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Programs on Sorting and Search Algorithms and Core Java

Round duration - 60 minutes
Round difficulty - Medium

Timing was fine - It was in the afternoon
Interviewer was friendly and helpful

Q1. 
Find Duplicates in an Array
Given an array ARR of size 'N', where each integer is in the range from 0 to N - 1, identify all elements that appear more than once.
Return the duplicate elements in any orde...read more
Ans. 
Find duplicates in an array of integers within a specified range.
• Iterate through the array and keep track of the count of each element using a hashmap.

• Return elements with count greater than 1 as duplicates.

• Handle edge cases like empty array or no duplicates found.

• Example: For input [0, 3, 1, 2, 3], output should be [3].
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Round duration - 60 minutes
Round difficulty - Medium

- Timing was fine - Afternoon
- Interviewer was friendly

Q1. How would you design a caching library?
Ans. 
Designing a caching library involves considering data storage, retrieval, expiration policies, and cache invalidation strategies.
• Define the caching requirements such as data size, access patterns, and expiration policies.

• Choose a suitable data structure for caching like LRU, LFU, or a simple key-value store.

• Implement cache eviction policies to handle memory constraints and optimize performance.

• Consider thread safety an...read more
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Round duration - 60 minutes
Round difficulty - Medium

- Timing was fine - Afternoon
- Interviewer was friendly

Q1. What is the number of edges in a 10x10 cube?
Ans. 
A 10x10 cube has 600 edges.
• A cube has 12 edges, so a 10x10 cube would have 12 edges on each of its 6 faces.

• 12 edges x 6 faces = 72 edges for the entire cube.

• However, each edge is shared by two faces, so we need to divide by 2 to get the total number of unique edges.

• 72 edges / 2 = 36 unique edges on the outer surface of the cube.

• Since the cube has 10x10x10 = 1000 unit cubes, each with 12 edges, we need to subtract the e...read more
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Q1. To find the kth minimum element from BST
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Q2. Basic OOPs question like inheritance encapsulation
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Q1. In a BST two numbers are swapped find swapped nos.
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Q2. What you did in college projects
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Q1. Puzzles: find the fastest 3 horses in 25 horse race with a race and 5 horses can be run at a time
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Q2. Weakness and strength. how a friend will describe you
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Q1. Self-introduction
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Q2. Communication skills
Ans. 
Effective communication skills are essential for collaboration, clarity, and building relationships in any professional setting.
• Active listening: Demonstrating understanding by paraphrasing what others say.

• Clear articulation: Using simple language to explain complex ideas, like breaking down medical terms for patients.

• Non-verbal cues: Maintaining eye contact and using appropriate gestures to enhance the message.

• Feedbac...read more
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Q1. About organization
Ans. 
Understanding an organization's structure and culture is crucial for effective collaboration and achieving goals.
• Organizational structure defines roles and responsibilities, e.g., a hierarchical model with clear reporting lines.

• Culture influences employee behavior and engagement, e.g., a collaborative culture encourages teamwork and innovation.

• Effective communication channels are vital, e.g., regular team meetings and ...read more
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Q2. Questions based on IATA
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Q1. About airlines and continents
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