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Hi

Try the following it will be user friendly

Map<String,Id> recordtypeMap = new Map<String,Id>();

for(Record Type leadRT : [select id, Name from RecordType where SObjectType = 'Lead' ]){

recordtypeMap.put(leadRT.Name,leadRT.Id);
}

//you can create lead by following

Lead l = new Lead(firstname='testInsertLead2', lastname='test',company='Temp Company', RecordTypeId = recordtypeMap.get('registration type lead'));

// be sure to enter record type name correctly other wise it would give an error.

Thank you,
Choose it as Best Answer if it resolved your issue.