C#

Add Injury (passing in start date and end date)<br />
if start date = end date then<br />
  Check to see if the start date has already been added into your collection.<br />
    If not, add it in and exit routine<br />
<br />
set date = start date<br />
while date is less than or equal to end date<br />
  Check to see if the date has already been added into your collection.<br />
    If not, add it in.<br />
  date = date + 1 (hint - you need to use AddDays for this).<br />
end while

private Hashtable _myTable = new Hashtable();<br />
<br />
public void AddItem(string value)<br />
{<br />
  if (_myTable.Count > 0 && !_myTable.ContainsKey(value))<br />
    _myTable.Add(value, value);<br />
}

AddItem("Hello");<br />
AddItem("Hello 2");<br />
AddItem("Hello");