How to solve the problem of counting prime numbers
This article mainly introduces "how to solve the prime counting problem". In the daily operation, I believe that many people have doubts about how to solve the prime counting problem. The editor consulted all kinds of data and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubt of "how to solve the prime counting problem"! Next, please follow the editor to study!
Problem description
Count the number of all prime numbers less than the non-negative integer n.
Example:
Input: n = 10
Output: 4
Example:
Input: n = 1
Output: 0
Example:
Input: n = 0
Output: 0
Hint: 0
