Create Leetcode Group Anagrams.cpp

Leetcode Group Anagrams.cpp

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+class Solution {
+public:
+    vector<vector<string>> groupAnagrams(vector<string>& strs) {
+        vector<vector<string>>ans; // created a ans vector to store our answer
+
+        int n=strs.size();
+// created a unorderes map to stor the mapping b/w the sorted word and orginal word
+
+
+        unordered_map<string,vector<string>>mp;
+
+        for(int i=0;i<n;i++){
+            string s=strs[i];
+            sort(strs[i].begin(),strs[i].end()); // sort the word
+            mp[strs[i]].push_back(s); // do mapping 
+        }
+        for(auto it:mp){
+            ans.push_back(it.second); //push it.second
+        }
+
+        return ans; // finally return our ans vector
+    }
+};