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38 lines
809 B
38 lines
809 B
/**
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* File: binary_tree.dart
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* Created Time: 2023-04-03
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* Author: liuyuxin (gvenusleo@gmail.com)
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*/
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import '../utils/print_util.dart';
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import '../utils/tree_node.dart';
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void main() {
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/* 初始化二叉树 */
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// 舒适化节点
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TreeNode n1 = TreeNode(1);
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TreeNode n2 = TreeNode(2);
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TreeNode n3 = TreeNode(3);
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TreeNode n4 = TreeNode(4);
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TreeNode n5 = TreeNode(5);
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// 构建引用指向（即指针）
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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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printTree(n1);
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/* 插入与删除节点 */
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TreeNode 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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printTree(n1);
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// 删除节点 P
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n1.left = n2;
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print("\n删除节点 P 后\n");
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printTree(n1);
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}
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