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A new Flutter package project.

dart_tree #

实现AVL树和红黑树

GitHubdart pub

在线演示

Getting Started #

AVL树相关类有AVLTreeSet、AVLTreeMap,AVLTreeSet操作类似Set,AVLTreeMap操作类似Map。

红黑树相关类有RedBlackTreeSet、RedBlackTreeMap,RedBlackTreeSet操作类似Set,RedBlackTreeMap操作类似Map。

如果设置treeInstance.debug为true,则添加、删除查找元素的时候会将查找路径和树的结构打印出来,如下所示:

///红黑树示例
///数字后的b代表节点颜色是黑色,r表示红色
Insert:1678**********************************

InserCase2

->1301->1916
TreeStructure:

              1301b
            /        \
           /          \
        1205b        1916b
       /            /      \
    511r         1678r    1973r
End Insert:1678**********************************
///AVL树示例
///-表示左重,平衡因子是-1;+表示右重,平衡因子是+1;没符号表示左右子树等高,平衡因子是0
Insert:437**********************************

RebalanceForInsert:437
RotateRight:966,687

->1419->319->966->687
TreeStructure:

                     1419-
               /                \
              /                  \
             /                    \
            /                      \
         319                      1845+
       /      \                          \
      /        \                          \
    104+       687                       1966
         \    /    \
        184 437    966
End Insert:437**********************************


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A new Flutter package project.

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