Add C++ solution of problem #2965

Author: Cuda-Chen

2965/solution.cpp

@@ -0,0 +1,20 @@
+class Solution {
+public:
+    vector<int> findMissingAndRepeatedValues(vector<vector<int>>& g) {
+        int n = g.size();
+        vector<int> cnt(n * n + 1);
+        for(auto v : g) {
+            for(int e : v)
+                cnt[e]++;
+        }
+
+        vector<int> ans(2);
+        for(int i = 1; i <= n * n; i++) {
+            if(cnt[i] == 2)
+                ans[0] = i;
+            else if(cnt[i] == 0)
+                ans[1] = i;
+        }
+        return ans;
+    }
+};