Update minimum-number-of-steps-to-make-two-strings-anagram.py

Author: kamyu104

Python/minimum-number-of-steps-to-make-two-strings-anagram.py

@@ -1,6 +1,9 @@
 # Time:  O(n)
 # Space: O(1)
 
+import collections
+
+
 class Solution(object):
     def minSteps(self, s, t):
         """