Java Program - Sieve of Eratosthenes

Mathematics for Programming Numbers (Article) Numbers (Program)

27

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Given Input:

Expected Output:

Program:

import java.util.Arrays;

public class SieveOfEratosthenes {
    public static void main(String[] args) {
        int n = 50;
        boolean[] prime = new boolean[n + 1];
        Arrays.fill(prime, true);
        prime[0] = prime[1] = false;

        for (int i = 2; i * i <= n; i++) {
            if (prime[i]) {
                for (int j = i * i; j <= n; j += i)
                    prime[j] = false;
            }
        }

        for (int i = 2; i <= n; i++) {
            if (prime[i])
                System.out.print(i + " ");
        }
    }
}

Output:

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