Create remove-all-adjacent-duplicates-in-string.cpp

Author: kamyu104

C++/remove-all-adjacent-duplicates-in-string.cpp

@@ -0,0 +1,17 @@
+// Time:  O(n)
+// Space: O(n)
+
+class Solution {
+public:
+    string removeDuplicates(string S) {
+        string result;
+        for (const auto& c : S) {
+            if (!result.empty() && result.back() == c) {
+                result.pop_back();
+            } else {
+                result.push_back(c);
+            }
+        }
+        return result;
+    }
+};