Create 387-First-Unique-Character-In-A-String.cpp

Author: Vitali-Matteo

cpp/387-First-Unique-Character-In-A-String.cpp

@@ -0,0 +1,24 @@
+class Solution{    
+    public:    
+        unordered_map<char, int> Map = {};    
+        int firstUniqChar(string s){            
+            char c;            
+            int Min;            
+            for(int i = 0; i < s.length(); i++){                
+                if(Map.find(s[i]) != Map.end()){                    
+                    Map[s[i]]++;                    
+                }
+                else{                    
+                    Map.insert(make_pair(s[i], 1));                    
+                }                
+            }            
+            Min = s.length();            
+            for(auto & m : Map){                
+                if((m.second == 1) && (s.find(m.first) < Min)){                    
+                    c = m.first;                    
+                    Min = s.find(m.first);                    
+                }                
+            }            
+            return Min == s.length() ? -1 : Min;
+        }       
+};