Update minimum-remove-to-make-valid-parentheses.cpp

kamyu104 · web-flow · commit 0f72bcd41de8 · 2019-11-03T16:25:54.000+08:00
diff --git a/C++/minimum-remove-to-make-valid-parentheses.cpp b/C++/minimum-remove-to-make-valid-parentheses.cpp
@@ -4,7 +4,6 @@
 class Solution {
 public:
     string minRemoveToMakeValid(string s) {
-        unordered_set<int> lookup;
         int count = 0;
         for (auto i = 0; i < s.size(); ++i) {
             if (s[i] == '(') {
