Solution to #10

Solutions/S10.cpp

@@ -0,0 +1,17 @@
+int findJudge(int N, vector<vector<int>>& trust) {
+    unordered_map<int, int> truster, trusted;
+    for(int i = 0; i < trust.size(); i++)
+    {
+        //Let trust[i][0] = Person a and trust[i][1] = Person b
+        //truster -> No of persons whom person a trusts
+        //trusted -> No of persons trusting person b
+        truster[trust[i][0]]++;
+        trusted[trust[i][1]]++;
+    }
+    for(int i = 1; i <= N; i++)
+    {
+        //Definition of town judge, trusts nobody and trusted by everyone
+        if(truster[i] == 0 && trusted[i] == N - 1) return i;
+    }
+    return -1;
+}