kalk 1-metodowy 1

src/main/java/emps/P3_Grupowanie.java

@@ -14,10 +14,8 @@ public class P3_Grupowanie {
         for (Employee emp : emps) {
             final String city = emp.getCity();
             if (cnt.containsKey(city)) {
-                Integer oldCnt = cnt.get(city);
-                cnt.put(city, oldCnt+1);
-                Integer oldSum = sum.get(city);
-                sum.put(city, oldSum+emp.getSalary());
+                cnt.put(city, cnt.get(city) +1);
+                sum.put(city, sum.get(city) +emp.getSalary());
             } else {
                 cnt.put(city, 1);
                 sum.put(city, emp.getSalary());