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feat: Traditional Chinese version (#1163)
* First commit * Update mkdocs.yml * Translate all the docs to traditional Chinese * Translate the code files. * Translate the docker file * Fix mkdocs.yml * Translate all the figures from SC to TC * 二叉搜尋樹 -> 二元搜尋樹 * Update terminology. * Update terminology * 构造函数/构造方法 -> 建構子 异或 -> 互斥或 * 擴充套件 -> 擴展 * constant - 常量 - 常數 * 類 -> 類別 * AVL -> AVL 樹 * 數組 -> 陣列 * 係統 -> 系統 斐波那契數列 -> 費波那契數列 運算元量 -> 運算量 引數 -> 參數 * 聯絡 -> 關聯 * 麵試 -> 面試 * 面向物件 -> 物件導向 歸併排序 -> 合併排序 范式 -> 範式 * Fix 算法 -> 演算法 * 錶示 -> 表示 反碼 -> 一補數 補碼 -> 二補數 列列尾部 -> 佇列尾部 區域性性 -> 區域性 一摞 -> 一疊 * Synchronize with main branch * 賬號 -> 帳號 推匯 -> 推導 * Sync with main branch * First commit * Update mkdocs.yml * Translate all the docs to traditional Chinese * Translate the code files. * Translate the docker file * Fix mkdocs.yml * Translate all the figures from SC to TC * 二叉搜尋樹 -> 二元搜尋樹 * Update terminology * 构造函数/构造方法 -> 建構子 异或 -> 互斥或 * 擴充套件 -> 擴展 * constant - 常量 - 常數 * 類 -> 類別 * AVL -> AVL 樹 * 數組 -> 陣列 * 係統 -> 系統 斐波那契數列 -> 費波那契數列 運算元量 -> 運算量 引數 -> 參數 * 聯絡 -> 關聯 * 麵試 -> 面試 * 面向物件 -> 物件導向 歸併排序 -> 合併排序 范式 -> 範式 * Fix 算法 -> 演算法 * 錶示 -> 表示 反碼 -> 一補數 補碼 -> 二補數 列列尾部 -> 佇列尾部 區域性性 -> 區域性 一摞 -> 一疊 * Synchronize with main branch * 賬號 -> 帳號 推匯 -> 推導 * Sync with main branch * Update terminology.md * 操作数量(num. of operations)-> 操作數量 * 字首和->前綴和 * Update figures * 歸 -> 迴 記憶體洩漏 -> 記憶體流失 * Fix the bug of the file filter * 支援 -> 支持 Add zh-Hant/README.md * Add the zh-Hant chapter covers. Bug fixes. * 外掛 -> 擴充功能 * Add the landing page for zh-Hant version * Unify the font of the chapter covers for the zh, en, and zh-Hant version * Move zh-Hant/ to zh-hant/ * Translate terminology.md to traditional Chinese
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200
zh-hant/codes/python/chapter_tree/avl_tree.py
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200
zh-hant/codes/python/chapter_tree/avl_tree.py
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"""
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File: avl_tree.py
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Created Time: 2022-12-20
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Author: a16su (lpluls001@gmail.com)
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"""
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import sys
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from pathlib import Path
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sys.path.append(str(Path(__file__).parent.parent))
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from modules import TreeNode, print_tree
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class AVLTree:
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"""AVL 樹"""
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def __init__(self):
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"""建構子"""
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self._root = None
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def get_root(self) -> TreeNode | None:
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"""獲取二元樹根節點"""
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return self._root
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def height(self, node: TreeNode | None) -> int:
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"""獲取節點高度"""
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# 空節點高度為 -1 ,葉節點高度為 0
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if node is not None:
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return node.height
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return -1
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def update_height(self, node: TreeNode | None):
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"""更新節點高度"""
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# 節點高度等於最高子樹高度 + 1
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node.height = max([self.height(node.left), self.height(node.right)]) + 1
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def balance_factor(self, node: TreeNode | None) -> int:
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"""獲取平衡因子"""
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# 空節點平衡因子為 0
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if node is None:
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return 0
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# 節點平衡因子 = 左子樹高度 - 右子樹高度
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return self.height(node.left) - self.height(node.right)
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def right_rotate(self, node: TreeNode | None) -> TreeNode | None:
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"""右旋操作"""
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child = node.left
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grand_child = child.right
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# 以 child 為原點,將 node 向右旋轉
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child.right = node
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node.left = grand_child
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# 更新節點高度
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self.update_height(node)
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self.update_height(child)
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# 返回旋轉後子樹的根節點
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return child
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def left_rotate(self, node: TreeNode | None) -> TreeNode | None:
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"""左旋操作"""
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child = node.right
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grand_child = child.left
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# 以 child 為原點,將 node 向左旋轉
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child.left = node
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node.right = grand_child
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# 更新節點高度
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self.update_height(node)
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self.update_height(child)
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# 返回旋轉後子樹的根節點
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return child
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def rotate(self, node: TreeNode | None) -> TreeNode | None:
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"""執行旋轉操作,使該子樹重新恢復平衡"""
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# 獲取節點 node 的平衡因子
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balance_factor = self.balance_factor(node)
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# 左偏樹
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if balance_factor > 1:
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if self.balance_factor(node.left) >= 0:
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# 右旋
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return self.right_rotate(node)
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else:
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# 先左旋後右旋
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node.left = self.left_rotate(node.left)
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return self.right_rotate(node)
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# 右偏樹
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elif balance_factor < -1:
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if self.balance_factor(node.right) <= 0:
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# 左旋
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return self.left_rotate(node)
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else:
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# 先右旋後左旋
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node.right = self.right_rotate(node.right)
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return self.left_rotate(node)
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# 平衡樹,無須旋轉,直接返回
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return node
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def insert(self, val):
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"""插入節點"""
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self._root = self.insert_helper(self._root, val)
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def insert_helper(self, node: TreeNode | None, val: int) -> TreeNode:
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"""遞迴插入節點(輔助方法)"""
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if node is None:
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return TreeNode(val)
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# 1. 查詢插入位置並插入節點
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if val < node.val:
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node.left = self.insert_helper(node.left, val)
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elif val > node.val:
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node.right = self.insert_helper(node.right, val)
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else:
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# 重複節點不插入,直接返回
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return node
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# 更新節點高度
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self.update_height(node)
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# 2. 執行旋轉操作,使該子樹重新恢復平衡
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return self.rotate(node)
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def remove(self, val: int):
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"""刪除節點"""
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self._root = self.remove_helper(self._root, val)
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def remove_helper(self, node: TreeNode | None, val: int) -> TreeNode | None:
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"""遞迴刪除節點(輔助方法)"""
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if node is None:
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return None
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# 1. 查詢節點並刪除
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if val < node.val:
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node.left = self.remove_helper(node.left, val)
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elif val > node.val:
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node.right = self.remove_helper(node.right, val)
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else:
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if node.left is None or node.right is None:
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child = node.left or node.right
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# 子節點數量 = 0 ,直接刪除 node 並返回
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if child is None:
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return None
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# 子節點數量 = 1 ,直接刪除 node
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else:
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node = child
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else:
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# 子節點數量 = 2 ,則將中序走訪的下個節點刪除,並用該節點替換當前節點
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temp = node.right
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while temp.left is not None:
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temp = temp.left
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node.right = self.remove_helper(node.right, temp.val)
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node.val = temp.val
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# 更新節點高度
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self.update_height(node)
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# 2. 執行旋轉操作,使該子樹重新恢復平衡
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return self.rotate(node)
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def search(self, val: int) -> TreeNode | None:
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"""查詢節點"""
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cur = self._root
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# 迴圈查詢,越過葉節點後跳出
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while cur is not None:
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# 目標節點在 cur 的右子樹中
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if cur.val < val:
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cur = cur.right
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# 目標節點在 cur 的左子樹中
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elif cur.val > val:
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cur = cur.left
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# 找到目標節點,跳出迴圈
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else:
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break
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# 返回目標節點
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return cur
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"""Driver Code"""
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if __name__ == "__main__":
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def test_insert(tree: AVLTree, val: int):
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tree.insert(val)
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print("\n插入節點 {} 後,AVL 樹為".format(val))
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print_tree(tree.get_root())
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def test_remove(tree: AVLTree, val: int):
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tree.remove(val)
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print("\n刪除節點 {} 後,AVL 樹為".format(val))
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print_tree(tree.get_root())
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# 初始化空 AVL 樹
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avl_tree = AVLTree()
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# 插入節點
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# 請關注插入節點後,AVL 樹是如何保持平衡的
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for val in [1, 2, 3, 4, 5, 8, 7, 9, 10, 6]:
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test_insert(avl_tree, val)
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# 插入重複節點
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test_insert(avl_tree, 7)
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# 刪除節點
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# 請關注刪除節點後,AVL 樹是如何保持平衡的
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test_remove(avl_tree, 8) # 刪除度為 0 的節點
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test_remove(avl_tree, 5) # 刪除度為 1 的節點
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test_remove(avl_tree, 4) # 刪除度為 2 的節點
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result_node = avl_tree.search(7)
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print("\n查詢到的節點物件為 {},節點值 = {}".format(result_node, result_node.val))
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