solves minimum difference betweeb highest and lowest of k scores

Author: anishLearnsToCode

Diff for: README.md

@@ -475,7 +475,7 @@
 | 1971 | [Find if Path Exists in Graph](https://leetcode.com/problems/find-if-path-exists-in-graph)                                                                |                                                             [![Java](assets/java.png)](src/FindIfPathExistsInGraph.java)                                                             |                                                                                                                                   |
 | 1974 | [Minimum Time to Type Word Using Special Typewriter](https://leetcode.com/problems/minimum-time-to-type-word-using-special-typewriter)                    |                                                   [![Java](assets/java.png)](src/MinimumTimeToTypeWordUsingSpecialTypewriter.java)                                                   |                                                                                                                                   |
 | 1979 | [Find Greatest Common Divisor of Array](https://leetcode.com/problems/find-greatest-common-divisor-of-array)                                              |                                                        [![Java](assets/java.png)](src/FindGreatestCommonDivisorOfArray.java)                                                         |                                                                                                                                   |
-| 1984 | [Minimum Difference Between Highest and Lowest of K Scores](https://leetcode.com/problems/minimum-difference-between-highest-and-lowest-of-k-scores)      |                                                                                                                                                                                      |                                                                                                                                   |
+| 1984 | [Minimum Difference Between Highest and Lowest of K Scores](https://leetcode.com/problems/minimum-difference-between-highest-and-lowest-of-k-scores)      |                                                [![Java](assets/java.png)](src/MinimumDifferenceBetweenHighestAndLowestOfKScores.java)                                                |                                                                                                                                   |
 | 1991 | [Find the Middle Index in Array](https://leetcode.com/problems/find-the-middle-index-in-array)                                                            |                                                                                                                                                                                      |                                                                                                                                   |
 | 1995 | [Count Special Quadruplets](https://leetcode.com/problems/count-special-quadruplets)                                                                      |                                                                                                                                                                                      |                                                                                                                                   |
 | 2000 | [Reverse Prefix of Word](https://leetcode.com/problems/reverse-prefix-of-word)                                                                            |                                                                                                                                                                                      |                                                                                                                                   |

Diff for: src/MinimumDifferenceBetweenHighestAndLowestOfKScores.java

@@ -0,0 +1,16 @@
+// https://leetcode.com/problems/minimum-difference-between-highest-and-lowest-of-k-scores
+// T: O(Nlog(N))
+// S: O(1)
+
+import java.util.Arrays;
+
+public class MinimumDifferenceBetweenHighestAndLowestOfKScores {
+    public int minimumDifference(int[] nums, int k) {
+        Arrays.sort(nums);
+        int minDifference = Integer.MAX_VALUE;
+        for (int i = 0 ; i < nums.length - k + 1 ; i++) {
+            minDifference = Math.min(minDifference, nums[i + k - 1] - nums[i]);
+        }
+        return minDifference;
+    }
+}