You're not quite implementing the correct algorithm: In your first example, primes_sieve doesn't maintain a list of primality flags to strike/unset (as in ... ... <看更多>

import java.util.Scanner;. public class Eratosthenes {. /**. * Sieve of Eratosthenes. * Generates prime numbers. * You can find more about the algorithm ... ... <看更多>

You can argue by contradiction. To make things clear, when I talk about a number's 'prime factors' I'm going to count multiple instances of ... ... <看更多>