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数据结构英文翻译及答案

1.Give the prefix. infix and postfix expressions corresponding to the tree .

给该前缀。中缀和后缀表达式树对应的。

2.Give a mininum cost spanning tree corresponding to the figure (using prim or Kruskal ).

给最小代价树对应图（使用图元或克鲁斯）

3.Please design an algorithm to count how many nodes the binary tree have.

请设计一个算法来计算二进制树有多少个节点。

4.Write an algorithm that traveses a linked list and destroy all nodes whose value is negative.

写一个算法，traveses链表并摧毁它的值是负的所有节点

如果有问题还请指出，仅供参考。最后一题代码在电脑上测试过，还有简便算法大家共享。

英文翻译：

1、遍历一课树，给出前序，中序，后序。

2、遍历最小生成树上的数字，用prim和kruskal算法

3、设计一个算法，计算二叉树上有多少个节点

4、写一个算法Traveses()链表，删除所有节点的值是负的

第一题：看书上P139页例题图6.11 二叉树三种遍历序列

第二题：构造一棵最小生成树，使用prim和kruskal算法。参考P200图7.26 Prim算法构造最小生成树的过程示意图和p202页图7.27 Kruskal算法构造最小生成树的过程示意图，会构造示意图就行。前面两题不涉及到代码。

第三题：

基本思想：

若二叉树为空，则结束统计操作，否则：

中序遍历根的左子树；

统计根节点树；

中序遍历根的右子树。

代码如下：

int count = 0 ; //count定义为全局变量

void Count_tree(BTree t)

{

if(t)

{

Count_Tree(t -> lchild);

Count ++;

Count_Tree(t -> rchild);

}

具体内容见书上P145页，这里只写了算法一，也可以写算法二。

第四题：

void Travel(Linklist H) //函数名可以自己取

{

Linklist pre , q , p;

pre = H ; //用于记录遍历的当前节点的前一个位置

p = H -> next;

while(p)

{

if(p -> data < 0)

{

q = p;

pre -> next = p -> next; //在链表中去除p,即使前驱指向当前待删除节点的下一个位置

free(q);

p = pre -> next;

}

else

{

pre = pre -> next;

p = p -> next;

}

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步Poo 百里Pai-li C: 蔡/柴Tsia/Choi/Tsai 曹/晁/巢Chao/Chiao/Tsao 岑Cheng 崔Tsui 查Cha 常Chiong 车Che 陈Chen/Chan/Tan 成/程Cheng 池Chi 褚/楚Chu 淳于Chwen-yu

D: 戴/代Day/Tai 邓Teng/Tang/Tung 狄Ti 刁Tiao 丁Ting/T 董/东Tung/Tong 窦Tou 杜To/Du/Too 段Tuan 端木Duan-mu 东郭Tung-kuo 东方Tung-fang F: 范/樊Fan/Van

房/方Fang 费Fei 冯/凤/封Fung/Fong 符/傅Fu/Foo G: 盖Kai 甘Kan 高/郜Gao/Kao 葛Keh 耿Keng 弓/宫/龚/恭Kung 勾Kou 古/谷/顾Ku/Koo 桂Kwei 管/关Kuan/Kwan

郭/国Kwok/Kuo 公孙Kung-sun 公羊Kung-yang 公冶Kung-yeh 谷梁Ku-liang H: 海Hay 韩Hon/Han 杭Hang 郝Hoa/Howe 何/贺Ho 桓Won 侯Hou 洪Hung 胡/扈Hu/Hoo

花/华Hua 宦Huan 黄Wong/Hwang 霍Huo 皇甫Hwang-fu 呼延Hu-yen J: 纪/翼/季/吉/嵇/汲/籍/姬Chi 居Chu 贾Chia 翦/简Jen/Jane/Chieh 蒋/姜/江/ Chiang/Kwong 焦Chiao 金/靳Jin/King 景/荆King/Ching

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