public Node buildTree(Int32 [] src)
{
List<Node> lists = initNodes(src);
lists.Sort(new SortWeight());
while(lists.Count>1)
{
lists.Sort(new SortWeight());
Node l = lists[0];
Node r = lists[1];
l.code = 0;
r.code = 1;
Node p = new Node();
p.left = l;
p.right = r;
p.code = 1;
p.weight = l.weight + r.weight;
p.native = false;
p.num =(l.num >= r.num ? l.num : r.num)+1;//取层次大的加1
//Console.WriteLine(p.num+" r: " + r.num+" l: "+l.num+" r:weight "+r.weight+" l:weight "+l.weight);
lists.Remove(l);
lists.Remove(r);
lists.Add(p);
}
return lists[0];
}
private List<Node> initNodes(Int32[] src)
{
List<Node> lists = new List<Node>();
for (Int32 i = 0; i < src.Length; i++)
{
Node node = new Node();
node.num = 0;//节点深度；
node.left = null;
node.right = null;
node.weight = src[i];
node.native = true;
node.key = (byte) i;
lists.Add(node);
}
return lists;
}