[1week]two-sum Sold

Author: Hong-Study

two-sum/Hong-Study.cpp

@@ -0,0 +1,19 @@
+class Solution {
+public:
+    vector<int> twoSum(vector<int>& nums, int target) {
+        std::map<int, int> numMap;
+        for (int i = 0; i < nums.size(); i++) {
+            int leftNum = target - nums[i];
+            if (numMap.find(leftNum) == numMap.end()) {
+                numMap[nums[i]] = i;
+                continue;
+            }
+
+            int idx = numMap[leftNum];
+            return std::vector<int>{idx, i};
+        }
+
+        return std::vector<int>{0, 0};
+    }
+};
+