From d50cdd1b1fc22b3e2541cbe33f711cbc26d80b85 Mon Sep 17 00:00:00 2001
From: Sam-wiz <samrudhvvandakudri2005@gmail.com>
Date: Wed, 11 Oct 2023 04:27:38 +0530
Subject: [PATCH] Added all the files

---
 javaProblems/problem20/Solution.java | 20 ++++++++++++++++
 javaProblems/problem20/Test.java     | 36 ++++++++++++++++++++++++++++
 javaProblems/problem20/readme.md     | 11 +++++++++
 3 files changed, 67 insertions(+)
 create mode 100644 javaProblems/problem20/Solution.java
 create mode 100644 javaProblems/problem20/Test.java
 create mode 100644 javaProblems/problem20/readme.md

diff --git a/javaProblems/problem20/Solution.java b/javaProblems/problem20/Solution.java
new file mode 100644
index 0000000..3e0d561
--- /dev/null
+++ b/javaProblems/problem20/Solution.java
@@ -0,0 +1,20 @@
+class Solution
+{
+	public static void printPrimeNumbers(int N) {
+        for (int i = 2; i <= N; i++) {
+            boolean isPrime = true;
+            for (int j = 2; j <= Math.sqrt(i); j++) {
+                if (i % j == 0) {
+                    isPrime = false;
+                    break;
+                }
+            }
+            if (isPrime) {
+                System.out.print(i);
+                if (i != N) {
+                    System.out.print(", ");
+                }
+            }
+        }
+    }
+ }
diff --git a/javaProblems/problem20/Test.java b/javaProblems/problem20/Test.java
new file mode 100644
index 0000000..a773965
--- /dev/null
+++ b/javaProblems/problem20/Test.java
@@ -0,0 +1,36 @@
+import java.util*;
+import java.io.ByteArrayOutputStream;
+import java.io.PrintStream;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+public class Test {
+    public static void main(String[] args) throws Exception {
+        Logger logger = Logger.getLogger(Logger.GLOBAL_LOGGER_NAME);
+        Solution solveSolution = new Solution();
+        int N = 13; // Change N to the desired test case input
+        String expectedOutput = "2, 3, 5, 7, 11, 13"; // Change to the expected output
+
+        // Redirect standard output to capture the printed numbers
+        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+        System.setOut(new PrintStream(outputStream));
+
+        // Call the function to be tested
+        solveSolution.printPrimeNumbers(N);
+
+        // Restore standard output
+        System.setOut(System.out);
+
+        // Get the captured output
+        String actualOutput = outputStream.toString().trim();
+
+        // Compare the actual and expected outputs
+        if (actualOutput.equals(expectedOutput)) {
+            System.out.println("Testcase passed!");
+        } else {
+            logger.log(Level.SEVERE, "Wrong solution!");
+            System.exit(1);
+        }
+    }
+}
+
diff --git a/javaProblems/problem20/readme.md b/javaProblems/problem20/readme.md
new file mode 100644
index 0000000..a0af635
--- /dev/null
+++ b/javaProblems/problem20/readme.md
@@ -0,0 +1,11 @@
+Given a number N, the task is to print all prime numbers less than or equal to N.
+Examples: 
+ 
+
+Input: 7
+Output: 2, 3, 5, 7
+
+Input: 13
+Output: 2, 3, 5, 7, 11, 13 
+
+