A queue is a first-in, first-out (FIFO) data structure, meaning the first element added is the first to be removed. You can think of it like a line at a store: people enter at the back and leave from the front. In Python, you can implement a queue using different techniques: Usin...
Be prepared for a wide range ofdata engineer Python interview questions. Expect questions about 1) data structures and data manipulation (e.g., Python lists, data types, data munging with pandas), 2) explanations (e.g., tell us about search/merge), and 3) Python coding tests. Sample Pyt...
Candidates go through a technical phone interview after the initial screen. The interview lasts around one hour. The focus is on the candidate’s SQL and Python/Java coding skills. Candidates are asked 8 to 10 questions using “Coderpad,” an online coding platform. The questions are evenly di...
Note:If you’ve ever useddictionariesin Python, then Redis follows the same structure. It’s a key-value store, where you canSETandGETdata just like a Pythondict. When a request comes in, you first check the cache database, then the main database. This way, you can prevent any unneces...
Data Structure Other names: static array Quick reference Worst Case space O(n)O(n) lookup O(1)O(1) append O(1)O(1) insert O(n)O(n) delete O(n)O(n) An array organizes items sequentially, one after another in memory. Each position in the array has an index, starting at...
Get ready for your Python data science interview with these essential interview questions. Learn the most important concepts and techniques in data science.
Python interview questions and answers: Learn about Python's basic syntax and data types, including variables, operators, control flow, input/output, and more. Explore the rules for naming variables, built-in data types, type conversion, and more.
Statistics Data Science Interview Questions Out of L1 and L2 regularizations, which one causes parameter sparsity and why? List the differences between Bayesian Estimate and Maximum Likelihood Estimation (MLE). Differentiate between Cluster and Systematic Sampling? Python Data Science Questions for Intervie...
Python Coding Interview Question #2: Graph Theory in Python Image by Author This is one of the very interesting Python coding interview questions from StrataScratch. It puts you in a very common yet complex situation of a real-life data scientist. ...
These four data analyst interview questions are only examples. They, for sure, are not the only questions you need to go through before the interview. However, they are excellent examples of what you can expect. Also, I chose them carefully so that they cover the most SQL and Python concep...