Update groups-of-strings.cpp

kamyu104 · web-flow · commit 707a4309dba8 · 2022-01-31T17:32:49.000+08:00
diff --git a/C++/groups-of-strings.cpp b/C++/groups-of-strings.cpp
@@ -1,7 +1,7 @@
 // Time:  O(26 * n)
 // Space: O(n)
 
-// union find
+// bitmasks, union find
 class Solution {
 public:
     vector<int> groupStrings(vector<string>& words) {
