public List<TestData> GetData (string sortExpression)
{
if (String.IsNullOrEmpty (sortExpression))
return data;
bool ascending;
string field;
int subtract;
if (sortExpression.EndsWith (" desc", StringComparison.OrdinalIgnoreCase)) {
ascending = false;
subtract = 5;
} else {
ascending = true;
subtract = 0;
}
if (subtract == 0)
field = sortExpression;
else
field = sortExpression.Substring (0, sortExpression.Length - subtract);
TestDataComparer comparer;
if (String.Compare (field, "ProductName", StringComparison.OrdinalIgnoreCase) == 0)
comparer = new TestDataComparer (false, ascending);
else
comparer = new TestDataComparer (true, ascending);
data.Sort (comparer);
return data;
}
public List <TestData> GetData(string sortExpression)
{
if (String.IsNullOrEmpty(sortExpression))
{
return(data);
}
bool ascending;
string field;
int subtract;
if (sortExpression.EndsWith(" desc", StringComparison.OrdinalIgnoreCase))
{
ascending = false;
subtract = 5;
}
else
{
ascending = true;
subtract = 0;
}
if (subtract == 0)
{
field = sortExpression;
}
else
{
field = sortExpression.Substring(0, sortExpression.Length - subtract);
}
TestDataComparer comparer;
if (String.Compare(field, "ProductName", StringComparison.OrdinalIgnoreCase) == 0)
{
comparer = new TestDataComparer(false, ascending);
}
else
{
comparer = new TestDataComparer(true, ascending);
}
data.Sort(comparer);
return(data);
}
public void Runtime_of_N(int array1Size)
{
var array1 = Enumerable.Range(0, array1Size).Select(x => new TestData(x)).ToArray();
var set = new HashSet <TestData>();
var unique = new List <TestData>();
var comparer = new TestDataComparer();
var stopwatch = Stopwatch.StartNew();
foreach (var t in array1)
{
if (!set.Contains(t, comparer))
{
set.Add(t);
unique.Add(t);
}
}
stopwatch.Stop();
Debug.WriteLine($"{nameof(Runtime_of_N)} took {stopwatch.ElapsedMilliseconds} ms");
unique.Count.Should().Be(array1Size);
stopwatch.ElapsedMilliseconds.Should().BeLessThan(100);
}
