s0015

include/s0015_3sum.hpp

@@ -0,0 +1,20 @@
+#ifndef S0015_3SUM
+#define S0015_3SUM
+
+#include <vector>
+#include <unordered_map>
+#include <algorithm>
+
+using namespace std;
+
+class Solution1 {
+ public:
+  vector<vector<int>> threeSum(vector<int>& nums);
+};
+
+class Solution2 {
+ public:
+  vector<vector<int>> threeSum(vector<int>& nums);
+};
+
+#endif