testtreet樹型結構測試例子
wangxl@20200924
為了方便理解mosquitto訂閱樹,本人用bcb工具編寫了testtreet, 樹型結構測試例子
,為了直觀理解,畫了個草圖。
以下為測試資料:
00c67d90
cur_subhier_node->children = null;
cur_subhier_node->topic_key =$sys
cur_subhier_node->prev = null
cur_subhier_node->next=null
cur_subhier_node->parent=&int_db.subs=00404510;
00c67f9c
cur_subhier_node->children = null;
cur_subhier_node->topic_key =aaa
cur_subhier_node->prev = null
cur_subhier_node->next=null
parent->children = cur_subhier_node=00c67f9c;
cur_subhier_node->parent=00c67d90
00c66666c
cur_subhier_node->children = null;
cur_subhier_node->topic_key =bbb
cur_subhier_node->prev = null
parent->children->prev = 00c66666c
cur_subhier_node->next = parent->children=00c67f9c;
parent->children = cur_subhier_node=00c66666c;
cur_subhier_node->parent=00c67d90
00c666b8
cur_subhier_node->children = null;
cur_subhier_node->topic_key =bbb01
cur_subhier_node->prev = null
parent->children->prev = 00c66666c
cur_subhier_node->next = null;
parent->children = cur_subhier_node=00c666b8;
cur_subhier_node->parent=00c66666c
00c66710
cur_subhier_node->children = null;
cur_subhier_node->topic_key =$sys2
cur_subhier_node->prev = null
int_db.subs.children->prev = cur_subhier_node=00c66710;
cur_subhier_node->next = int_db.subs.children=00c67d90;
int_db.subs.children = cur_subhier_node=00c66710;
cur_subhier_node->parent = &int_db.subs=00404510;
00c66768
cur_subhier_node->children = null;
cur_subhier_node->topic_key =ccc
cur_subhier_node->prev = null
cur_subhier_node->next=null
parent->children = cur_subhier_node=00c66768
cur_subhier_node->parent=00c66710
樹型圖g_subhier_dic=00c67d90
Trie樹 高階樹型結構
trie樹應用 trie 樹中文名叫字典樹 字首樹等等。這些名字暗示其與字元的處理有關,事實也確實如此,它主要用途就是將字串 當然也可以不限於字串 整合成樹形。它的核心思想就是通過最大限度地減少無謂的字串比較,使得查詢高效率,即 用空間換時間 再利用共同字首來提高查詢效率。典型應用於統計和排序大量的...
treeview 樹型結構生成
unit unit1 inte ce uses windows,messages,sysutils,variants,classes,graphics,controls,forms,dialogs,comctrls,stdctrls type pnoderec record name string ...
樹型結構的設計
最近做專案,經常用的樹型結構,對樹型表的設計有了新的理解.原來設計的樹型表結構 體現了一種遍歷的方式.用編碼控制相應的父子關係,雖然這樣也體現了關係,但在做轉移子樹時就相當麻煩了,而且邏輯關係也不清晰.這次的設計 改用父節點控制父子關係,同時提供乙個排序號,提供一種遍歷,可以增加多個字段,來擴充套件...