Here the main catch in the question is “one pass”. What does it mean? It means you get to traverse the list only once and there’s no coming back to a node once you’ve traversed it. But to calculate the middle element you will require the length of the entire LinkedList, right?
Talk about the experience you have had for the last few years in Python? Algorithms and Data Structures, Pythons Dicts – MultiValue Dicts, Range and Xrange, Iterators and Generators, Decorators How would you use the ternary operators in Python? Why isn’t all the memory de-allocated when Py...
In other words, it allows you to filter out elements from an iterable based on a specific condition. 18. Describe the usage of Python’s ‘zip’ function. The “zip” function in Python is used to combine multiple tables into a single iterable. It takes iterables as arguments and returns...
One advantage of an interpreted language like Python is that it can be run on any platform with a Python interpreter installed. This makes Python a very portable language and one that is widely used in a variety of different applications, including web development, data analysis, machine learning...
Q. Explain the //, %, and ** operators in Python. The // operator performs floor division. It will return the integer part of the result on division. 7//2 3 Normal division would return 3.5 here. Similarly, ** performs exponentiation. a**b returns the value of a raised to the pow...
25. How does data structure help in practical life? The easy part is over with our list of programming interview questions. With our next question, we are about to enter the intermediate level of coding interview questions. Here is what the answer should be, ...
SELECT i.Id, i.BillingDate, c.Name, r.Name AS ReferredByName FROM Invoices i JOIN Customers c ON i.CustomerId = c.Id LEFT JOIN Customers r ON c.ReferredBy = r.Id ORDER BY i.BillingDate; This question simply tests the candidate’s ability take a plain-English requirement and write ...
Bottom-up approach to crack yourpythoninterview Key Features Get the answer for the most common and challenging Python question Learn to trace the code and answer the question correctly Explore the solutions of GUI and DBMS in Python Gain sufficient understanding onMachine Learninglibrary and Pandas ...
Now you can easily create an object using the method shown in the previous question. 25. How to Create Methods? Ruby methods are equivalent to functions in other languages like C and Python. It prevents programmers from writing the same code blocks inside their program. Once you define a met...
Dart's null-aware operators allow you to perform calculations based on whether or not a value is null. It's a shortened version of a longer expression. Instead of throwing an error, a null-aware operator can be used to make nullable types useful in Dart. These operators are used in full...