From 91e2a3b82507e27677abb2f391d84041e0e9a824 Mon Sep 17 00:00:00 2001 From: Saksham-Gupta-1024 <59359000+Saksham-Gupta-1024@users.noreply.github.com> Date: Wed, 5 Oct 2022 01:17:10 +0530 Subject: [PATCH] Create SieveOfEratosthenes.java --- SieveOfEratosthenes.java | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 SieveOfEratosthenes.java diff --git a/SieveOfEratosthenes.java b/SieveOfEratosthenes.java new file mode 100644 index 0000000..38385fa --- /dev/null +++ b/SieveOfEratosthenes.java @@ -0,0 +1,33 @@ +class SieveOfEratosthenes { + void sieveOfEratosthenes(int n) + { + + boolean prime[] = new boolean[n + 1]; + for (int i = 0; i <= n; i++) + prime[i] = true; + + for (int p = 2; p * p <= n; p++) { + + if (prime[p] == true) { + + for (int i = p * p; i <= n; i += p) + prime[i] = false; + } + } + + for (int i = 2; i <= n; i++) { + if (prime[i] == true) + System.out.print(i + " "); + } + } + + public static void main(String args[]) + { + int n = 30; + System.out.print("Following are the prime numbers "); + System.out.println("smaller than or equal to " + n); + SieveOfEratosthenes g = new SieveOfEratosthenes(); + g.sieveOfEratosthenes(n); + } +} +