10+ Maersk Interview Questions and Answers for Freshers

A purchase order is a document issued by a buyer to a seller, indicating types, quantities, and agreed prices for products or services.

• It is a legally binding document

• It outlines the details of the products or services being purchased

• It includes quantities, prices, delivery dates, and terms of payment

• It serves as a record of the transaction between the buyer and seller

Sort an array of 0s, 1s, and 2s in linear time with a single scan approach.

• Use three pointers to keep track of the positions of 0s, 1s, and 2s in the array.

• Iterate through the array once and swap elements based on their values and the pointers.

• After the single scan, the array will be sorted in place with 0s, 1s, and 2s in order.

Find the fourth largest element in an array, return -2147483648 if not enough distinct elements.

• Sort the array in descending order

• Return the fourth element if it exists, else return -2147483648

Check if a node with a given value exists in a binary tree.

• Traverse the binary tree using depth-first search (DFS) or breadth-first search (BFS) to search for the node with the given value.

• Use a recursive or iterative approach to implement the search algorithm.

• Return 'true' if the node with the given value is found, otherwise return 'false'.

Find the shortest path in an unweighted graph from house 'S' to house 'T'.

• Use Breadth First Search (BFS) algorithm to find the shortest path in an unweighted graph.

• Create a queue to store the current house and its neighbors, and a visited set to keep track of visited houses.

• Start BFS from house 'S' and stop when reaching house 'T'.

• Return the path from 'S' to 'T' once 'T' is reached.

• If multiple shortest paths exist, return any one of them.

Remove duplicates from an array while maintaining order.

• Use a set to keep track of unique elements.

• Iterate through the array and add elements to the set if not already present.

• Convert the set back to an array to maintain order.

SQL joins are used to combine rows from two or more tables based on a related column between them.

• Inner Join: Returns rows when there is at least one match in both tables.

• Left Join: Returns all rows from the left table and the matched rows from the right table.

• Right Join: Returns all rows from the right table and the matched rows from the left table.

• Full Outer Join: Returns rows when there is a match in one of the tables.

• Cross Join: Returns the Cartesian product of the two ta...read more

Query to display students record in ascending order of name and descending order of subject.

• Use ORDER BY clause to sort the records

• Specify ASC for name and DESC for subject in the ORDER BY clause

• Example: SELECT * FROM students ORDER BY name ASC, subject DESC

Linear data structures have elements arranged in a sequential order, while non-linear data structures have elements connected in a non-sequential manner.

• Linear data structures include arrays, linked lists, queues, and stacks.

• Non-linear data structures include trees, graphs, and heaps.

• Linear data structures have a single path to traverse elements, while non-linear data structures have multiple paths.

Object Oriented Programming is a programming paradigm that uses objects to design applications.

• Encapsulation: Bundling data and methods that operate on the data together.

• Inheritance: Creating new classes based on existing classes.

• Polymorphism: Using a single interface to represent different data types or objects.

• Real life example: Creating a car class with properties like speed and methods like accelerate.

My strength is my ability to lead and motivate a team. My weakness is my tendency to be too detail-oriented.

• Strength: I have experience leading teams and have a knack for motivating individuals to work towards a common goal.

• Weakness: I tend to get caught up in the details and can sometimes lose sight of the bigger picture. I am working on delegating tasks more effectively to avoid this.

General rule of accounting is the principle that financial transactions should be recorded accurately and consistently.

• The general rule of accounting is to follow the principles of consistency, accuracy, and transparency.

• Transactions should be recorded in a timely manner to reflect the true financial position of the company.

• Accounting standards such as GAAP and IFRS provide guidelines for following the general rule of accounting.

• Examples include recording revenue when it is e...read more

I am currently located in New York City.

• New York City

• Manhattan

• East Coast

Database sharding is a method of splitting and distributing a database across multiple servers to improve performance and scalability.

• Sharding involves dividing a database into smaller, more manageable parts called shards.

• Each shard contains a subset of the data, allowing for parallel processing and improved performance.

• Sharding helps distribute the workload across multiple servers, reducing the burden on individual servers.

• Examples of sharding include partitioning a database...read more