public int lis(List <int> A)
{
var index = 0;
var max = 1;
var checkedList = new bool[A.Count];
while (index < A.Count)
{
if (checkedList[index])
{
index++;
continue;
}
TreeMultiNode root = new TreeMultiNode(A[index]);
checkedList[index] = true;
for (int i = index + 1; i < A.Count; i++)
{
if (A[i] < root.val)
{
continue;
}
checkedList[i] = true;
var tmp = insertNode(root, A[i]);
if (max < tmp)
{
max = tmp;
}
}
index++;
}
if (max == 1)
{
return(1);
}
return(max + 1);
}
private int insertNode(TreeMultiNode root, int value)
{
var node = new TreeMultiNode(value);
if (!root.children.Any())
{
root.children.Add(node);
return(1);
}
var isAdded = false;
var max = 0;
foreach (var child in root.children)
{
if (child.val > value)
{
continue;
}
isAdded = true;
var tmp = insertNode(child, value) + 1;
if (tmp > max)
{
max = tmp;
}
}
if (!isAdded)
{
root.children.Add(node);
if (max < 2)
{
max = 2;
}
}
return(max);
}