private IntervalNode Build(int l, int r, IntervalNode node)
{
if (l >= r)
{
return(null);
}
int mid = (l + r) / 2, i;
List <Interval> list = new List <Interval>();
for (i = 0; i < intervals_l.Count; i++)
{
if (mid < intervals_l[i].start)
{
break;
}
if (Contains(mid, intervals_l[i]))
{
list.Add(intervals_l[i]);
}
}
node = new IntervalNode(list);
node.point = mid;
if (l == min && r == max)
{
root = node;
}
node.left = Build(l, mid - 1, node.left);
node.right = Build(mid + 1, r, node.right);
return(node);
}
public void PrintL(IntervalNode node)
{
Console.Write(node.point + "\t");
if (node.left != null)
{
PrintL(node.left);
}
if (node.right != null)
{
PrintL(node.right);
}
}
public List <Interval> Q(int point, IntervalNode node)
{
if (point < node.leftIntervals[0].start)
{
return(Q(point, node.left));
}
if (point > node.rightIntervals[node.rightIntervals.Count - 1].end)
{
return(Q(point, node.right));
}
List <Interval> result = new List <Interval>();
for (int i = 0; i < node.leftIntervals.Count; i++)
{
if (Contains(point, node.leftIntervals[i]))
{
result.Add(node.leftIntervals[i]);
}
}
return(result);
}
