二叉树实现C.
作者:互联网
我一直在尝试在C中实现二进制搜索树以获得乐趣.我的
问题是我的插入功能有问题.以下是我到目前为止:
class TreeNode{
public:
int data;
TreeNode *left;
TreeNode *right;
void Insert(int value, TreeNode *x);
void TreeNode::Print(TreeNode *x);
TreeNode();
};
TreeNode::TreeNode(){
left = NULL;
right = NULL;
}
.
void TreeNode::Insert(int value, TreeNode *x){
if(x->left == NULL && x->right == NULL){
TreeNode *tree = new TreeNode();
tree->datavalue;
x->left = tree;
}
else if(x->left == NULL && x->right != NULL){
TreeNode *tree = new TreeNode();
tree->data = value;
x->left = tree;
}
else if(x->left != NULL && x->right == NULL){
TreeNode *tree = new TreeNode();
tree->data = value;
x->right = tree;
}
else if(x->left != NULL && x->right != NULL){
??????
}
}
解决方法:
您不应盲目插入,请遵循以下逻辑.如果x.value小于根值,则尝试向左插入.如果x.value为> = root.value,请转到右侧.重复此逻辑,直到您达到NULL值.这将是插入元素的适当位置.
你可以翻转逻辑,我只是选择了左边的<因为不到有点使箭头向左. < - :P
TreeNode *root = this;
TreeNode *parent = root;
//Traverse the tree, go left if x.val < , else go right(>=)
while(root) {
parent = root;
root = (root->value > x.value) ? root->left : root->right;
}
if(parent->value > x->value)
parent->left = x;
else
parent->right = x;
如果您不关心订购,请使用队列进行深度优先搜索.
queue<TreeNode*> nodes;
nodes.push(this);
while(1)
{
if(!nodes.front()->left)
{
nodes.front()->left = x;
return;
}
else if (!nodes.front()->right)
{
nodes.front()->right = x;
return;
}
nodes.push(nodes.front()->left);
nodes.push(nodes.front()->right);
nodes.pop();
}
标签:c,function,binary-tree,tree,insert 来源: https://codeday.me/bug/20190826/1725158.html