Merge pull request #90 from InflixOP/patch1

Create #2352. Equal Row and Column Pairs.cpp

Author: InflixOP

#2352. Equal Row and Column Pairs.cpp

@@ -0,0 +1,19 @@
+class Solution {
+public:
+    int equalPairs(vector<vector<int>>& grid) {
+        int n=grid.size();
+        int c=0;
+        map<vector<int>,int> mp;
+        for(int i=0;i<n;i++){
+           mp[grid[i]]++;
+        }
+        for(int i=0;i<n;i++){
+            vector<int> col;
+            for(int j=0;j<n;j++){
+                col.push_back(grid[j][i]);
+            }
+            c+=mp[col];
+        }
+        return c;
+    }
+};