Siemens Healthineers Interview Questions, Process, and Tips

IT was basic question from string and array

Q1. Data structure question find all leaf node from tree.
Ans. 
Use depth-first search to traverse the tree and identify leaf nodes.
• Implement depth-first search algorithm to traverse the tree.

• Identify nodes with no children as leaf nodes.

• Store leaf nodes in an array for retrieval.
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Q2. Print sentence word in reverse order without using default function. eg: input:-> I live in New York. output:-> I evil ni weN kroY.
Ans. 
Reverse each word in a sentence without using default function.
• Split the sentence into words

• Iterate through each word and reverse it

• Join the reversed words back into a sentence
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Q1. Programming question :Fibonacci series using recursion.
Ans. 
Fibonacci series using recursion is a classic programming problem where each number is the sum of the two preceding ones.
• Define a recursive function that takes an integer n as input

• Base case: if n is 0 or 1, return n

• Recursive case: return the sum of the previous two Fibonacci numbers

• Call the function recursively with n-1 and n-2 until base case is reached
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Q2. Programming question: Find 1st 2nd and 3rd highest from array of integer.
Ans. 
Find 1st, 2nd, and 3rd highest integers from an array.
• Sort the array in descending order.

• Retrieve the first three elements from the sorted array.

• Handle cases where array length is less than 3.
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Q1. They asked Puzzle
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Q1. Salary Discussion
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Q1. What is your experience?
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Q2. Do a summary of your work experience?
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Q3. What is your motivation to look for a new job?
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Q4. What bring your attention to the position?
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In it situation would you use a data vault architecture?

2 coding questions ( 1 easy , 1 medium) along with some mcqs on Hackerearth.
The test was for c++.

Q1. The technical round was of 1 hour. He asked OOPS concepts and 4 coding questions.(3 easy, 1 medium)
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Q2. Core OOPS concepts. Polymorphism and it's types Constructors , copy constructors, etc.. along with implementations. Deadlocks and how to prevent it. 1. Given n-1 positive numbers all from 1 to n, find t...read more
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Q1. Went through the resume and asked questions related to it. Since I mentioned DSA, he asked one question related to BST. Rest were just conversation.
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Q1. Just talked over phone about salary negotiations.
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Q1. Explain your project
Ans. 
Developed a web application for tracking and managing inventory in real-time
• Implemented a user-friendly interface for adding, updating, and deleting inventory items

• Utilized RESTful APIs to communicate with backend database for seamless data retrieval and storage

• Incorporated barcode scanning functionality for quick and accurate inventory management
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Q2. Write singleton pattern
Ans. 
Singleton pattern ensures a class has only one instance and provides a global point of access to it.
• Create a private static instance variable of the class

• Make the constructor private to prevent instantiation from outside the class

• Provide a static method to access the instance, creating it if necessary
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Q3. Handle thread safety in singleton pattern
Ans. 
Use synchronized block or double-checked locking to ensure only one thread can access singleton instance at a time.
• Use synchronized block to ensure thread safety in getInstance() method

• Implement double-checked locking to minimize synchronization overhead

• Consider using Enum singleton for thread safety without synchronization
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Q4. What is a delegate? Write a syntax
Ans. 
A delegate is a type that represents references to methods with a specific parameter list and return type.
• Delegates are similar to function pointers in C++ or pointers to member functions in C++.

• Delegates are used to pass methods as arguments to other methods.

• Delegates can be used to define callback methods.

• Syntax: delegate return_type delegate_name(parameter_list);
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Q5. What is event ? Write a sample event
Ans. 
An event is an occurrence or happening that can be detected and responded to by software.
• Events can be user actions (clicking a button, typing in a text box)

• Events can be system-generated (timer expiration, network packet arrival)

• Events are typically handled by event handlers or listeners in software development
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