How to insert all contact list using map?

hi

you can try this code:

List<Position__c> newsumrecords = new List<Position__c>();

for (Contact con : fullcontacts)

{
map<Date, set<Decimal>> mrns = conid2datemapmap.get(con.Id);

for (Date d : mrns.keyset())
{

Position__c refent = new Position__c(
Referring_Physician_del__c = con.Id, FSC__c = 'None', Service_Date__c = d, Count_of_MRN__c = mrns.get(d).size());

newsumrecords.add(refent);
debuglog += '<br/>' + (newsumrecords);

}
}

Thanks