migrate _45 to junit 5

Author: fishercoder1534

Diff for: src/test/java/com/fishercoder/_45Test.java

@@ -1,17 +1,17 @@
 package com.fishercoder;
 
 import com.fishercoder.solutions._45;
-import org.junit.BeforeClass;
-import org.junit.Test;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
-import static org.junit.Assert.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
 public class _45Test {
     private static _45.Solution1 solution1;
     private static int[] nums;
 
-    @BeforeClass
-    public static void setup() {
+    @BeforeEach
+    public void setup() {
         solution1 = new _45.Solution1();
     }