algorithm/hello-algo
1
0
Fork 0
mirror of https://github.com/krahets/hello-algo.git synced 2025-07-25 19:22:27 +08:00
Code Issues Packages Projects Releases Wiki Activity

Add build scripts for C# and

Browse Source 
unify the coding style.
This commit is contained in:
krahets
2023-02-08 22:18:02 +08:00
parent 38751cc5f5
commit 6dc21691ed
63 changed files with 2703 additions and 3911 deletions
Download Patch File Download Diff File Expand all files Collapse all files

165
codes/csharp/include/TreeNode.cs
View File

@ -4,95 +4,94 @@
* Author: haptear (haptear@hotmail.com)
*/
namespace hello_algo.include
namespace hello_algo.include;
public class TreeNode
{
public class TreeNode
public int val; // 结点值
public int height; // 结点高度
public TreeNode? left; // 左子结点引用
public TreeNode? right; // 右子结点引用
public TreeNode(int x)
{
public int val; // 结点值
public int height; // 结点高度
public TreeNode? left; // 左子结点引用
public TreeNode? right; // 右子结点引用
val = x;
}
public TreeNode(int x)
/**
* Generate a binary tree given an array
* @param arr
* @return
*/
public static TreeNode? ArrToTree(int?[] arr)
{
if (arr.Length == 0 || arr[0] == null)
return null;
TreeNode root = new TreeNode((int)arr[0]);
Queue<TreeNode> queue = new Queue<TreeNode>();
queue.Enqueue(root);
int i = 0;
while (queue.Count != 0)
{
val = x;
}
/**
* Generate a binary tree given an array
* @param arr
* @return
*/
public static TreeNode? ArrToTree(int?[] arr)
{
if (arr.Length == 0 || arr[0] == null)
return null;
TreeNode root = new TreeNode((int) arr[0]);
Queue<TreeNode> queue = new Queue<TreeNode>();
queue.Enqueue(root);
int i = 0;
while (queue.Count != 0)
TreeNode node = queue.Dequeue();
if (++i >= arr.Length) break;
if (arr[i] != null)
{
TreeNode node = queue.Dequeue();
if (++i >= arr.Length) break;
if (arr[i] != null)
{
node.left = new TreeNode((int) arr[i]);
queue.Enqueue(node.left);
}
if (++i >= arr.Length) break;
if (arr[i] != null)
{
node.right = new TreeNode((int) arr[i]);
queue.Enqueue(node.right);
}
node.left = new TreeNode((int)arr[i]);
queue.Enqueue(node.left);
}
if (++i >= arr.Length) break;
if (arr[i] != null)
{
node.right = new TreeNode((int)arr[i]);
queue.Enqueue(node.right);
}
}
return root;
}
/**
* Serialize a binary tree to a list
* @param root
* @return
*/
public static List<int?> TreeToList(TreeNode root)
{
List<int?> list = new();
if (root == null) return list;
Queue<TreeNode?> queue = new();
while (queue.Count != 0)
{
TreeNode? node = queue.Dequeue();
if (node != null)
{
list.Add(node.val);
queue.Enqueue(node.left);
queue.Enqueue(node.right);
}
else
{
list.Add(null);
}
}
return list;
}
/**
* Get a tree node with specific value in a binary tree
* @param root
* @param val
* @return
*/
public static TreeNode? GetTreeNode(TreeNode? root, int val)
{
if (root == null)
return null;
if (root.val == val)
return root;
}
/**
* Serialize a binary tree to a list
* @param root
* @return
*/
public static List<int?> TreeToList(TreeNode root)
{
List<int?> list = new();
if (root == null) return list;
Queue<TreeNode?> queue = new();
while (queue.Count != 0)
{
TreeNode? node = queue.Dequeue();
if (node != null)
{
list.Add(node.val);
queue.Enqueue(node.left);
queue.Enqueue(node.right);
}
else
{
list.Add(null);
}
}
return list;
}
/**
* Get a tree node with specific value in a binary tree
* @param root
* @param val
* @return
*/
public static TreeNode? GetTreeNode(TreeNode? root, int val)
{
if (root == null)
return null;
if (root.val == val)
return root;
TreeNode? left = GetTreeNode(root.left, val);
TreeNode? right = GetTreeNode(root.right, val);
return left != null ? left : right;
}
TreeNode? left = GetTreeNode(root.left, val);
TreeNode? right = GetTreeNode(root.right, val);
return left != null ? left : right;
}
}