mirror of
https://github.com/krahets/hello-algo.git
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e720aa2d24
* Sync recent changes to the revised Word. * Revised the preface chapter * Revised the introduction chapter * Revised the computation complexity chapter * Revised the chapter data structure * Revised the chapter array and linked list * Revised the chapter stack and queue * Revised the chapter hashing * Revised the chapter tree * Revised the chapter heap * Revised the chapter graph * Revised the chapter searching * Reivised the sorting chapter * Revised the divide and conquer chapter * Revised the chapter backtacking * Revised the DP chapter * Revised the greedy chapter * Revised the appendix chapter * Revised the preface chapter doubly * Revised the figures
41 lines
877 B
Python
41 lines
877 B
Python
"""
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File: binary_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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"""Driver Code"""
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if __name__ == "__main__":
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# 初始化二叉树
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# 初始化节点
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n1 = TreeNode(val=1)
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n2 = TreeNode(val=2)
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n3 = TreeNode(val=3)
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n4 = TreeNode(val=4)
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n5 = TreeNode(val=5)
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# 构建节点之间的引用（指针）
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n1.left = n2
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n1.right = n3
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n2.left = n4
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n2.right = n5
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print("\n初始化二叉树\n")
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print_tree(n1)
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# 插入与删除节点
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P = TreeNode(0)
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# 在 n1 -> n2 中间插入节点 P
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n1.left = P
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P.left = n2
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print("\n插入节点 P 后\n")
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print_tree(n1)
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# 删除节点
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n1.left = n2
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print("\n删除节点 P 后\n")
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print_tree(n1)
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