add 1984

fishercoder1534 · fishercoder1534 · commit 85430a301737 · 2021-08-29T08:24:21.000-07:00
diff --git a/README.md b/README.md
@@ -8,6 +8,7 @@ _If you like this project, please leave me a star._ &#9733;
 
 |  #  |      Title     |   Solutions   | Video  | Difficulty  | Tag                  
 |-----|----------------|---------------|--------|-------------|-------------
+|1984|[Minimum Difference Between Highest and Lowest of K Scores](https://leetcode.com/problems/minimum-difference-between-highest-and-lowest-of-k-scores/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1984.java) ||Easy||
 |1981|[Minimize the Difference Between Target and Chosen Elements](https://leetcode.com/problems/minimize-the-difference-between-target-and-chosen-elements/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1981.java) ||Medium|DP|
 |1980|[Find Unique Binary String](https://leetcode.com/problems/find-unique-binary-string/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1980.java) ||Medium||
 |1979|[Find Greatest Common Divisor of Array](https://leetcode.com/problems/find-greatest-common-divisor-of-array/)|[Solution](../master/src/main/java/com/fishercoder/solutions/_1979.java) ||Easy||
diff --git a/src/main/java/com/fishercoder/solutions/_1984.java b/src/main/java/com/fishercoder/solutions/_1984.java
@@ -0,0 +1,16 @@
+package com.fishercoder.solutions;
+
+import java.util.Arrays;
+
+public class _1984 {
+    public static class Solution1 {
+        public int minimumDifference(int[] nums, int k) {
+            Arrays.sort(nums);
+            int minDiff = nums[nums.length - 1];
+            for (int i = 0; i <= nums.length - k; i++) {
+                minDiff = Math.min(minDiff, nums[i + k - 1] - nums[i]);
+            }
+            return minDiff;
+        }
+    }
+}
diff --git a/src/test/java/com/fishercoder/_1984Test.java b/src/test/java/com/fishercoder/_1984Test.java
@@ -0,0 +1,27 @@
+package com.fishercoder;
+
+import com.fishercoder.solutions._1984;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class _1984Test {
+    private static _1984.Solution1 solution1;
+
+    @BeforeClass
+    public static void setup() {
+        solution1 = new _1984.Solution1();
+    }
+
+    @Test
+    public void test1() {
+        assertEquals(0, solution1.minimumDifference(new int[]{90}, 1));
+    }
+
+    @Test
+    public void test2() {
+        assertEquals(2, solution1.minimumDifference(new int[]{9,4,1,7}, 2));
+    }
+
+}
