Yandex Interview Questions and Answers

Priority and severity are key concepts in QA QC, with priority referring to the importance of fixing a bug and severity indicating the impact of the bug on the system.

• Priority is the order in which bugs should be fixed based on their importance to the system

• Severity is the impact of a bug on the system's functionality

• Priority is usually assigned by the project manager or team lead

• Severity is typically determined b...read more

A drawing of a mobile robot with wheels and sensors for navigation.

• Include wheels for mobility

• Add sensors for navigation and obstacle avoidance

• Include a body to house the electronics and power source

2 powered by 8 is equal to 256.

• 2^8 = 2*2*2*2*2*2*2*2 = 256

Arrow functions are a concise way to write functions in JavaScript.

• Arrow functions are written using the '=>' syntax.

• They do not have their own 'this' keyword, instead they inherit it from the parent scope.

• They are often used for short, one-line functions.

• Example: const add = (a, b) => a + b;

Compute a user purchase matrix from JSON and CSV data formats.

• Load JSON data containing user purchase records, e.g., { 'userId': 1, 'purchases': ['item1', 'item2'] }.

• Load CSV data with user IDs and purchase details, e.g., 'userId,item1,item2'.

• Create a matrix where rows represent users and columns represent items, filling in purchase counts.

• Use libraries like pandas in Python for efficient data manipulation and mat...read more

Decision trees algorithm is a popular machine learning technique used for classification and regression tasks.

• Decision trees are a type of supervised learning algorithm that is used for both classification and regression tasks.

• They work by recursively splitting the data into subsets based on the most significant attribute.

• Each internal node represents a test on an attribute, each branch represents the outcome of t...read more