linked list implementation

This is a linked list implementation who is pretty fast.

*creation:
listBtns = linkedListClass('grpName');
for igrp = 1:n
b.grpName = aObj.INP.GROUP{igrp}.GROUPNAME; %#ok<*AGROW>
b.handle= uicontrol('Style','radiobutton ',...
'units' , 'normalized', ...
'String',b.grpName,...
'Position',[0.01,igrp*0.03,0.2,0.03],...
'Enable','off');
%set the hande func for the modif of the text
set(b.handle,'Callback',@(hObject,eventdata)radionButtons_callback(hObject,eventdata, guidata(hObject)));
b.value= false;
rdioBtnsEgoGrp.listBtns.addAtEnd(b);
% rdioBtns.wasLastSelected = false;
end

*interogation
L = correctionList();
if ~L.isEmpty()
i = 1;
el = L.getElementOnPoz(i);
while ~isempty(el)
fprintf('\n Elem Nr: %d', el.Data.nr);
fprintf('\n Group Name: %s', el.Data.grpName);
i= i+1;
el = L.getElementOnPoz(i);
end
else
fprintf('\n Empty List ');
end

*deletion
L = correctionList();
if ~L.isEmpty()
L.deleteElemOnPoz(1);
el = L.getElementOnPoz(1);
while ~isempty(el)
L.deleteElemOnPoz(1);
el = L.getElementOnPoz(1);
end
else
fprintf('\n Empty List ');
end