update

leetcode_py/2006.py

@@ -0,0 +1,11 @@
+from typing import List
+
+
+class Solution:
+    def countKDifference(self, nums: List[int], k: int) -> int:
+        count = 0  # number of pairs
+        for i in range(len(nums)):
+            for j in range(i + 1, len(nums)):
+                if abs(nums[i] - nums[j]) == k:
+                    count += 1
+        return count