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krahets
2023-04-23 14:58:03 +08:00
parent 881ece517f
commit fe8027e64a
26 changed files with 344 additions and 626 deletions
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15
chapter_tree/binary_tree_traversal.md
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@@ -203,15 +203,13 @@ comments: true
```csharp title="binary_tree_bfs.cs"
/* 层序遍历 */
List<int> levelOrder(TreeNode root)
{
List<int> levelOrder(TreeNode root) {
// 初始化队列，加入根节点
Queue<TreeNode> queue = new();
queue.Enqueue(root);
// 初始化一个列表，用于保存遍历序列
List<int> list = new();
while (queue.Count != 0)
{
while (queue.Count != 0) {
TreeNode node = queue.Dequeue(); // 队列出队
list.Add(node.val); // 保存节点值
if (node.left != null)
@@ -548,8 +546,7 @@ comments: true
```csharp title="binary_tree_dfs.cs"
/* 前序遍历 */
void preOrder(TreeNode? root)
{
void preOrder(TreeNode? root) {
if (root == null) return;
// 访问优先级：根节点 -> 左子树 -> 右子树
list.Add(root.val);
@@ -558,8 +555,7 @@ comments: true
}
/* 中序遍历 */
void inOrder(TreeNode? root)
{
void inOrder(TreeNode? root) {
if (root == null) return;
// 访问优先级：左子树 -> 根节点 -> 右子树
inOrder(root.left);
@@ -568,8 +564,7 @@ comments: true
}
/* 后序遍历 */
void postOrder(TreeNode? root)
{
void postOrder(TreeNode? root) {
if (root == null) return;
// 访问优先级：左子树 -> 右子树 -> 根节点
postOrder(root.left);