int low = 0;
			 int high = 19;
			 int mid = (low+high)/2;
			 int i = 0;
			 while ((low <= high) && (i < strName->Length))
			 {
				 if(String::Compare(strTarget,strName[i])< 0)
					 high = mid-1;
				 else if(String::Compare(strTarget,strName[i])> 0)
					 low = mid+1;
				 else
					 low = high+1;
				 i++;