Create rank-transform-of-an-array.py

Author: kamyu104

Python/rank-transform-of-an-array.py

@@ -0,0 +1,10 @@
+# Time:  O(nlogn)
+# Space: O(n)
+
+class Solution(object):
+    def arrayRankTransform(self, arr):
+        """
+        :type arr: List[int]
+        :rtype: List[int]
+        """
+        return map({x: i+1 for i, x in enumerate(sorted(set(arr)))}.get, arr)