Solution as on 17-03-2022 10:02 pm

Author: knockcat

2150. Find All Lonely Numbers in the Array.cpp

@@ -0,0 +1,21 @@
+// 2150.✅ Find All Lonely Numbers in the Array
+
+class Solution
+{
+public:
+    vector<int> findLonely(vector<int> &nums)
+    {
+        map<int, int> m;
+        vector<int> res;
+        for (int i : nums)
+            ++m[i];
+
+        for (int i = 0; i < nums.size(); ++i)
+        {
+            if (m[nums[i]] == 1 && m.count(nums[i] - 1) == 0 && m.count(nums[i] + 1) == 0)
+                res.push_back(nums[i]);
+        }
+
+        return res;
+    }
+};