SBT Japan Software Engineer Interview Questions and Answers

Q1. General DSA question leetcode style
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Q1. Discussion on previous project
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Q1. Spring related questions
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Q2. Java related questions
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Q3. Couple of coding questions (Easy)
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3 leetcode hards, followed by some system design

Q1. How to design amazon
Ans. 
Designing Amazon involves creating a user-friendly e-commerce platform with a vast product selection, efficient search and recommendation algorithms, secure payment processing, and reliable delivery logistics.
• Develop a user-friendly interface for easy navigation and product search

• Implement recommendation algorithms based on user behavior and preferences

• Integrate secure payment processing systems to protect customer inf...read more
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Q2. How to invert 25 bst
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To invert a binary search tree (BST), swap the left and right children of each node recursively.
• Start from the root node and recursively swap the left and right children of each node.

• Repeat this process for all nodes in the BST.

• The final result will be the inverted BST.
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It was a machine coding round

Q1. Similar to the other question
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Q2. Give an array and an element sort the array with difference of that number to array elements
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Sort an array of strings by the difference of a given element to each array element.
• Iterate through the array and calculate the absolute difference between the given element and each array element.

• Sort the array based on the calculated differences.

• Return the sorted array.
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3 questions easy-medium level leetcode problem I solved 2 completely and 3rd question partially (9/15 test cases passed) to move on to 2nd round

Q1. Implement an app similar to splitwise
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Asked dsa based coding questions

1 hr test with mcq and coding snippet

Q1. What are pointers in c?
Ans. 
Pointers are variables that store memory addresses of other variables in C programming language.
• Pointers are used to manipulate data structures like arrays, linked lists, and trees.

• They can be used to pass values by reference to functions.

• Pointers can also be used to allocate memory dynamically using functions like malloc() and calloc().
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Q2. Write a linked list program.
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A linked list program is a data structure that stores a sequence of elements with pointers to the next element.
• Create a Node class with a value and a next pointer

• Create a LinkedList class with a head pointer and methods to add, remove, and traverse nodes

• Example: LinkedList ll = new LinkedList(); ll.add(5); ll.add(10); ll.remove(5);
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Q3. Applications of data structures
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Data structures are used to organize and manipulate data efficiently in various applications.
• Data structures are used in databases to store and retrieve data quickly.

• In computer graphics, data structures are used to represent geometric objects.

• Data structures are used in algorithms such as sorting and searching.

• In networking, data structures are used to represent network packets and routing tables.

• Data structures are u...read more
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Q4. Algorithm for merge sort
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Merge sort is a divide and conquer algorithm that recursively divides the input array into two halves, sorts them and then merges them.
• Divide the array into two halves

• Recursively sort the two halves

• Merge the sorted halves

• Repeat until the entire array is sorted
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Q5. Cloud computing application in real world in project
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Cloud computing is widely used in various industries for data storage, processing, and analysis.
• Cloud computing allows for easy scalability and cost-effectiveness in managing large amounts of data.

• Real-time collaboration and access to data from anywhere are some of the benefits of cloud computing.

• Examples of cloud computing applications in real-world projects include Amazon Web Services (AWS), Microsoft Azure, and Goog...read more
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Q6. Java and nodejs questions
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