add test for 1679

Author: fishercoder1534

src/test/java/com/fishercoder/_1679Test.java

@@ -0,0 +1,26 @@
+package com.fishercoder;
+
+import com.fishercoder.solutions._1679;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class _1679Test {
+    private static _1679.Solution1 solution1;
+    private static int[] nums;
+    private static int k;
+
+    @BeforeClass
+    public static void setup() {
+        solution1 = new _1679.Solution1();
+    }
+
+    @Test
+    public void test1() {
+        nums = new int[]{2, 5, 4, 4, 1, 3, 4, 4, 1, 4, 4, 1, 2, 1, 2, 2, 3, 2, 4, 2};
+        k = 3;
+        assertEquals(4, solution1.maxOperations(nums, k));
+    }
+
+}