Wafer Space Senior Software Engineer 2 Interview Questions and Answers

Connected sum problem involves finding the number of connected components in a graph

• The problem can be solved using DFS or BFS algorithm

• The input graph can be represented using adjacency list or matrix

• The output is the number of connected components in the graph

Clone a linked list with random pointers.

• Create a new node for each node in the original list.

• Store the mapping between the original and cloned nodes in a hash table.

• Traverse the original list again and set the random pointers in the cloned list using the hash table.

• Return the head of the cloned list.

I'm a passionate software engineer with a strong background in full-stack development and a love for solving complex problems.

• Graduated with a degree in Computer Science from XYZ University.

• Worked at ABC Corp, where I developed a web application that improved user engagement by 30%.

• Proficient in languages like JavaScript, Python, and Java, with experience in frameworks like React and Django.

• Enjoy collaborating in agile...read more

Yes, I got placed at XYZ company.

• I received an offer from XYZ company and accepted it.

• I will be starting my new job at XYZ company next month.

• I am excited to join the team at XYZ company and contribute to their software development projects.

Looking for better growth opportunities and challenges.

• Limited scope for learning and development

• No clear career progression path

• Lack of challenging projects

• Unsatisfactory work-life balance

• Better compensation and benefits offered by new company

Unknown

• I apologize, but I do not have any information about your company at this time.

A segmentation fault occurs when a program tries to access an invalid memory location.

• Commonly caused by dereferencing null or uninitialized pointers.

• Example: Accessing an array out of its bounds can lead to a segmentation fault.

• Occurs in languages like C and C++ where manual memory management is required.

• Can also happen due to stack overflow, such as with deep recursion.

• Operating systems use memory protection to preve...read more

Remove duplicates from a string

• Convert string to char array

• Create a HashSet to store unique characters

• Iterate through char array and add to HashSet

• Convert HashSet back to string

32-bit and 64-bit processors differ in data handling capacity, memory addressing, and performance capabilities.

• 32-bit processors can address up to 4 GB of RAM, while 64-bit processors can handle significantly more (theoretically up to 16 exabytes).

• 64-bit processors are generally faster and more efficient, especially for applications requiring large amounts of memory.

• Most modern operating systems and applications are op...read more