Time: 119 ms (21.87%), Space: 44.6 MB (19.20%) - LeetHub

Author: yashcode77

0442-find-all-duplicates-in-an-array/0442-find-all-duplicates-in-an-array.cpp

@@ -0,0 +1,14 @@
+class Solution {
+public:
+    vector<int> findDuplicates(vector<int>& nums) {
+        vector<int> ans;
+        unordered_map<int,int> mp;
+        for(int i : nums){
+            mp[i]++;
+        }
+        for(auto i : mp){
+            if(mp[i.first]==2) ans.push_back(i.first);
+        }
+        return ans;
+    }
+};