public static IEnumerable Subsets(SqlInt32 cardinal)
{
if (cardinal.IsNull)
{
yield break;
}
var c = new Subset(cardinal.Value);
for (var success = c.First(); success; success = c.Next())
{
yield return(c);
}
}
public void Next1()
{
var subSet = new Subset(1, 10, 5);
var firstSubSet = subSet.Get();
Assert.AreEqual(new int[] { 1, 2, 3, 4, 5 }, firstSubSet);
var count = 1;
while (subSet.Next())
{
count++;
}
Assert.AreEqual(252, count);
}
public void Next2()
{
var subSet = new Subset(1, 20, 3);
var firstSubSet = subSet.Get();
Assert.AreEqual(new int[] { 1, 2, 3 }, firstSubSet);
var count = 1;
while (subSet.Next())
{
count++;
}
Assert.AreEqual(1140, count);
}
public void Next3()
{
var count = 0;
for (var i = 0; i <= 10; i++)
{
var subSet = new Subset(1, 10, i);
count++;
while (subSet.Next())
{
count++;
}
}
Assert.AreEqual(1024, count);
}