Siemens Interview Questions and Answers

Factors to consider when creating REST API

• Define clear and consistent naming conventions for endpoints and resources

• Use proper HTTP methods (GET, POST, PUT, DELETE) for CRUD operations

• Implement proper error handling and status codes

• Ensure security measures such as authentication and authorization are in place

• Optimize performance by considering caching and pagination

• Document the API thoroughly for developers to easily understand and use

Sum all digits until single digit is reached

• Iterate through each digit and add them together

• Repeat the process until the sum is a single digit

• Example: For input 1234, sum = 1+2+3+4 = 10, then sum = 1+0 = 1

Python is a popular programming language known for its simplicity and readability. Lists in Python are versatile data structures that can hold multiple items of different types.

• Python is widely used in software development due to its ease of use and readability.

• Lists in Python are ordered collections of items, which can be of different data types.

• Lists can be modified, appended, sorted, and sliced in Python.

• Example: list_example = [1, 'apple', True, 3.14]

A colorful and interactive website designed to engage and educate children through games, videos, and interactive activities.

• Use bright colors and fun animations to capture children's attention

• Include interactive games and puzzles to make learning fun

• Incorporate educational videos and interactive activities to keep children engaged

• Ensure the website is easy to navigate and user-friendly for children of all ages

Find the maximum sum of non-adjacent elements in an array.

• Create an array to store the maximum sum at each index

• Iterate through the input array and calculate the maximum sum considering the current element and the previous non-adjacent element

• Return the maximum sum found

Utilize efficient algorithms, minimize redundant code, optimize database queries

• Use data structures like hash maps or binary trees for faster lookups

• Minimize nested loops and unnecessary iterations

• Optimize database queries by using indexes and avoiding unnecessary joins

The median streaming problem involves finding the median of a stream of numbers as they are being inputted.

• Maintain two heaps - a max heap for the lower half of the numbers and a min heap for the higher half.

• Keep the heaps balanced by ensuring the size difference is at most 1.

• If the total number of elements is odd, the median is the root of the max heap. If even, average the roots of both heaps.

Reverse a string by using built-in functions or manually iterating through the characters.

• Use built-in functions like reverse() in Python or StringBuilder.reverse() in Java.

• Manually iterate through the characters of the string and append them in reverse order to a new string.

• Consider edge cases like empty string or null input.