高频题（0）
1. Optimizing the Hamming Weight Calculation
You are given a function that calculates the number of 1 bits (the Hamming weight) in a uint32_t number. The current implementation uses a loop that iterates until the number is zero, in each iteration performing a bitwise AND between the number and one less than the number, and increments a count. The follow-up question is: How can you optimize this function to make it faster? During the interview, the interviewer suggested building an unordered_map with 256 entries, where each entry contains a char value and its corresponding number of bits. Reflect on this approach and discuss whether it would actually speed up the process and why.
2. Basic Matrix Processing in CV Coding
For the CV coding part of the interview, you were asked to perform basic matrix processing. Can you explain what basic matrix processing in computer vision might involve and how you would implement a simple matrix operation?
3. Optimized Solution for LC Coding Problem
During the interview, you were asked to provide an optimized solution for a LeetCode coding problem, which you were unable to do. Please describe how you would approach solving a coding problem under time constraints and what strategies you would use to find an optimized solution.
4. String Manipulation Coding Problem
The coding interview involved a string manipulation problem similar to those found on Leetcode. The specific details of the problem are not provided, but it would be a typical string processing task that one might encounter on such platforms.
