CODE QUALITY REVIEW | PEOPLE GET REJECTED HERE

Summary

In this video, the host discusses key criteria for hiring in product-based companies, emphasizing problem-solving, communication, and code quality. They review community-submitted code for problems like 'rotting oranges' and 'number of islands,' providing feedback on modularization, variable naming, and best practices. The host also introduces job opportunities with Reliable and encourages viewers to improve their coding skills for better interview performance.

Takeaways

• 😀 The speaker emphasizes the importance of problem-solving in interviews, stating that candidates must either solve the problem or at least approach the best possible solution in terms of complexity.
• 🗣️ Communication of thought processes is highlighted as a key criterion for candidate selection, suggesting that articulating one's approach is as important as the solution itself.
• 🔍 Code quality is stressed as a significant factor in interviews, with the speaker sharing personal experience from a Google interview, where code quality was a determining factor even if the problem was not fully solved.
• 📝 The speaker encourages modularizing code into functions to enhance readability and maintainability, advising against long, monolithic functions.
• 👍 Using classes or structs instead of pairs for multiple variables is recommended to improve code readability, which is a practice the speaker appreciates in the reviewed code.
• 🚫 The script discourages certain practices like using 'i-1' repeatedly, suggesting that such patterns should be replaced with more descriptive variable names to enhance clarity.
• 📐 The importance of proper variable naming is underscored, with the speaker advising to avoid ambiguous names like 's - val' and instead use meaningful identifiers.
• 🔑 The script suggests that certain checks, like validating coordinates, should be encapsulated in private functions to keep the code clean and focused.
• 🔄 The use of references instead of creating new variables is recommended to save space and improve efficiency, especially when iterating over collections.
• 📊 The speaker mentions the potential pitfalls of calling '.size()' within a loop, advising to calculate the size once and reuse the value to avoid unnecessary computations.
• 📚 The importance of understanding the context of the problem, such as whether indexing is zero-based or one-based, is highlighted to avoid confusion and potential errors.

Q & A

What are the four key criteria for hiring a candidate in product-based companies as mentioned in the video?

The four key criteria include solving the problem or reaching near to the best possible solution, effective communication of thought process, code quality, and the ability to modularize code into functions.

Why is code quality considered a significant factor in technical interviews?

Code quality is crucial because it reflects the candidate's ability to write clean, efficient, and maintainable code, which is highly valued in a professional setting.

What does the video suggest as a best practice for handling long code during an interview?

The video suggests breaking down long code into smaller, modular functions to improve readability and organization.

What is the importance of using classes or structs instead of pairs for multiple variables in coding?

Using classes or structs improves readability and organization by grouping related variables together, making the code easier to understand and maintain.

What feedback did the speaker receive after their Google interview regarding code quality?

The speaker received positive feedback on their code quality, highlighting its importance even when not being able to solve the question completely.

What is the significance of the 'rotating oranges' problem in the context of the video?

The 'rotating oranges' problem serves as an example to discuss code modularization and the importance of breaking down code into functions for better clarity and organization.

What is the recommendation for handling variables with repetitive arithmetic operations like 'i - 1' in code?

The recommendation is to store the result of the arithmetic operation in a separate variable with a descriptive name for better readability and clarity.

Why is it suggested to avoid using 'i < grid.size()' in a loop condition?

Using 'i < grid.size()' in a loop condition is discouraged because it can lead to unnecessary function calls to 'size()' with each iteration, potentially impacting performance.

What does the video suggest regarding the naming convention for variables representing dimensions in a grid?

The video suggests using 'n' for length and 'm' for width, as these are more conventional and immediately recognizable to most programmers.

What is the importance of checking if a function should be private or public during an interview?

Checking the scope of a function as private or public is important for encapsulation and to ensure that only the necessary parts of the code are accessible, maintaining good object-oriented design principles.

What is the role of the sponsor 'Reliable' in the video, and what opportunities do they offer?

Reliable is a sponsor that offers job opportunities in business analytics and data analytics with a wide salary range and no age or fee restrictions, providing a platform for candidates to register, take tests, and get hired by leading companies.