
NatWest Group

10+ NatWest Group Software Engineer Interview Questions and Answers
Q1. How would you resolve a merge conflict if two developers are working on the same branch?
Resolve merge conflict by communicating with the other developer, reviewing changes, and using version control tools.
Communicate with the other developer to understand their changes and discuss how to resolve the conflict.
Review the conflicting changes in the code to identify the differences and decide which changes to keep.
Use version control tools like Git to merge the changes manually or use tools like Git's merge tool to automatically resolve conflicts.
Test the merged cod...read more
Q2. What is the purpose of the 'with' keyword in Python?
The 'with' keyword in Python is used for resource management and ensures that clean-up actions are performed.
Used for managing resources like files, sockets, etc.
Automatically closes the resource when the block of code is exited
Helps in avoiding resource leaks and ensures proper clean-up
Follows the context management protocol
Q3. Write a program to find the sum of the contiguous subarray within a one-dimensional array of numbers that has the largest sum.
Program to find the sum of the contiguous subarray with the largest sum in a one-dimensional array.
Start with initializing variables for current sum and max sum as the first element of the array.
Iterate through the array, updating current sum by adding the current element or starting a new subarray.
Update max sum if current sum is greater, and continue until the end of the array.
Return the max sum as the result.
Q4. Explain the Constructor, Destructor, Generators
Constructor creates and initializes an object, Destructor destroys an object, Generators are functions that return iterators.
Constructor is a special method that is called when an object is created. It initializes the object's properties and allocates memory.
Destructor is a special method that is called when an object is destroyed. It frees up any resources that the object was using.
Generators are functions that use the yield keyword to return an iterator. They allow for lazy...read more
Q5. How does Python handle memory
Python uses automatic memory management through garbage collection.
Python uses reference counting to keep track of objects in memory.
When an object's reference count reaches zero, it is immediately deleted.
Python also uses a garbage collector to clean up circular references.
Memory allocation is handled by the Python memory manager.
Python provides tools like sys.getsizeof() to monitor memory usage.
Q6. Write a program for Binary Search
Program for Binary Search
Binary search is an efficient algorithm for finding an element in a sorted array.
It works by repeatedly dividing the search space in half.
The array must be sorted in ascending order for binary search to work.
The algorithm compares the target value with the middle element of the array.
If they are equal, the search is successful. If not, the search continues in the left or right half of the array.
Q7. Bsics of python and spark
Python is a high-level programming language used for various applications. Spark is a distributed computing framework for big data processing.
Python is easy to learn and has a large community for support.
Spark is used for processing large datasets and can handle data from various sources.
Python can be used with Spark to perform data analysis and machine learning tasks.
Spark provides APIs for programming in Java, Scala, and Python.
Python has libraries like NumPy, Pandas, and M...read more
Q8. Explain Java code compile process
Java code compile process involves several steps including preprocessing, compilation, and bytecode generation.
Java code is first preprocessed to handle import statements and macros.
The code is then compiled into bytecode using the Java compiler (javac).
The bytecode is platform-independent and can be executed on any Java Virtual Machine (JVM).
During compilation, the code is checked for syntax errors and type safety.
The compiled bytecode is stored in .class files.
At runtime, t...read more
Q9. 2. What is OOPs
OOPs stands for Object-Oriented Programming. It is a programming paradigm that uses objects to represent and manipulate data.
OOPs focuses on creating reusable code by organizing data and behavior into objects.
It emphasizes the concepts of encapsulation, inheritance, and polymorphism.
Objects are instances of classes, which define their properties (attributes) and behaviors (methods).
Inheritance allows classes to inherit properties and behaviors from other classes.
Polymorphism ...read more
Q10. Current task in currents organisation
Developing a new feature for the company's website to improve user experience.
Implementing front-end changes using React.js
Collaborating with UX designers to ensure design consistency
Testing the feature for bugs and performance issues
Q11. Explain JVM, JRE, JDK
JVM is a virtual machine that executes Java bytecode. JRE is a runtime environment that includes JVM and libraries. JDK is a development kit that includes JRE and tools for developing Java applications.
JVM stands for Java Virtual Machine and is responsible for executing Java bytecode.
JRE stands for Java Runtime Environment and includes JVM, libraries, and other components required to run Java applications.
JDK stands for Java Development Kit and includes JRE along with tools a...read more
Q12. Reverse a link list
Reverse a linked list
Iterate through the list and reverse the pointers
Use three pointers to keep track of current, previous, and next nodes
Update the head of the list to point to the last node
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