Added 1984-minimum-difference-between-highest-and-lowest-of-k-scores.c

Author: nsk126

Diff for: c/1984-minimum-difference-between-highest-and-lowest-of-k-scores.c

@@ -0,0 +1,26 @@
+int cmp(const void* a, const void* b) {
+    return *(int*)a - *(int*)b;
+}
+
+int min(int a, int b){
+    if(a > b) return b;
+    return a;
+}
+
+int minimumDifference(int* nums, int numsSize, int k) {
+    if (k == 1) return 0;
+
+    qsort(nums, numsSize, sizeof(int), cmp);
+    int res = 1e5;
+    int l = 0;
+    int r = k - 1;
+
+    while (r < numsSize)
+    {
+        res = min(res, nums[r] - nums[l]);
+        l += 1;
+        r += 1;
+    }
+
+    return res;
+}