Group employees by city

Set_Employees_By_Location.java

@@ -0,0 +1,61 @@
+/* Group the employees by city 
+
+ * Input:
+ * ----------------
+ * Employee |      City
+ * ---------------------
+ * Arijit       Kolkata
+ * Minaz        Mumbai
+ * Rahul        Chennai
+ * Rajesh       Kolkata
+ * Sekhar       Chennai
+ * Kasim        Chennai
+
+ * Output:
+ * ----------------
+ * Kolkata: Arijit,Rajesh
+ * Mumbai: Minaz
+ * Chennai: Rahul,Sekhar,Kasim
+ */
+
+import java.util.*;
+public class Set_Employees_By_Location {
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+        LinkedHashMap<String,String> emp = new LinkedHashMap<>();
+        System.out.print("Number of Employee: ");
+        int n = sc.nextInt();sc.nextLine();
+        for (int i = 0; i < n; i++) {
+            System.out.print((i+1)+"> Enter name: ");
+            String name = sc.nextLine();
+            System.out.print("Enter city: ");
+            String city = sc.nextLine();
+            emp.put(name,city);
+        }
+        System.out.println();
+        // Show my data set
+        for(HashMap.Entry<String,String> data : emp.entrySet())
+        {
+            System.out.println(data.getKey()+": "+data.getValue());
+        }
+        System.out.println();
+
+        LinkedHashMap<String,String> update = new LinkedHashMap<>();
+        for(HashMap.Entry<String,String> data : emp.entrySet())
+        {
+            if(!update.containsKey(data.getValue()))
+            {
+                update.put(data.getValue(),data.getKey());
+            }
+            else
+            {
+                update.put(data.getValue(),update.get(data.getValue())+","+data.getKey());
+            }
+        }
+        // List data
+        for(HashMap.Entry<String,String> ans : update.entrySet())
+        {
+            System.out.println(ans.getKey()+": "+ans.getValue());
+        }
+    }    
+}