Add fix for problem 2413

src/main/java/com/fishercoder/solutions/_2413.java

@@ -0,0 +1,18 @@
+package com.fishercoder.solutions;
+
+public class _2413 {
+
+    public static class Solution1 {
+        public int smallestEvenMultiple(int n) {
+            int maxNo = 2 * n;
+            int smallestMultiple = -1;
+            for(int i = 2; i <= maxNo; i += 2) {
+                if (i % n == 0 && i % 2 == 0) {
+                    smallestMultiple = i;
+                    break;
+                }
+            }
+            return smallestMultiple;
+        }
+    }
+}

src/test/java/com/fishercoder/_2413Test.java

@@ -0,0 +1,25 @@
+package com.fishercoder;
+
+import com.fishercoder.solutions._2413;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class _2413Test {
+    private static _2413.Solution1 solution1;
+    private static int n;
+
+    @BeforeClass
+    public static void setup() {
+        solution1 = new _2413.Solution1();
+    }
+
+    @Test
+    public void test1() {
+        n = 99;
+        int actual = solution1.smallestEvenMultiple(n);
+        int expected = 198;
+        assertEquals(actual, expected);
+    }
+}