Merge pull request #9 from sumit-kushwah/main

solved set mis match problem

solutions/set_mismatch.cpp

@@ -0,0 +1,37 @@
+// problem link: 
+
+#include<bits/stdc++.h>
+#include<unordered_map>
+
+using namespace std;
+
+class Solution {
+public:
+  // write your code here
+
+  vector<int> findErrorNums(vector<int>& nums) {
+    sort(nums.begin(), nums.end());
+    vector<int> ans;
+    for (int i = 1; i < nums.size(); i++) {
+      if (nums[i] == nums[i - 1]) {
+        ans.push_back(nums[i]);
+      }
+    }
+    vector<int> m(nums.size());
+    for (int i = 0; i < nums.size(); i++) {
+      m[nums[i] - 1] = 1;
+    }
+    for(int i = 0; i < nums.size(); i++) {
+      if (m[nums[i] - 1] == 0) {
+        ans.push_back(i + 1);
+      }
+    }
+    return ans;
+  }
+
+};
+
+int main() {
+  Solution s;
+
+}