full groups statistics

buisnesslogic/src/main/java/com/plannaplan/services/GroupService.java

@@ -1,6 +1,7 @@
 package com.plannaplan.services;
 
 import java.util.HashMap;
+import java.util.Iterator;
 import java.util.List;
 import java.util.Objects;
 import java.util.Optional;
@@ -153,4 +154,22 @@ public class GroupService {
 
         return response;
     }
+
+    /**
+     * @return amount of groups with full capacity taken
+     */
+    public Integer getFullgroupsAmmount() {
+        Integer response = 0;
+        final Iterator<Groups> groups = this.repo.findAll().iterator();
+
+        while (groups.hasNext()) {
+            final Groups group = groups.next();
+            if (group.getCapacity() <= group.getRegisteredStudents().size()) {
+                response += 1;
+            }
+
+        }
+
+        return response;
+    }
 }