SDUT 3344 数据结构实验之二叉树五：层序遍历

 1 #include <iostream>
 2 #include <cstdio>
 3 
 4 using namespace std;
 5 
 6 struct Tree
 7 {
 8     char c;
 9     Tree *lt,*rt;
10 };
11 
12 Tree *creat(char *&xx)
13 {
14     if(*xx==‘\0‘)
15         return NULL;
16     if(*xx==‘,‘)
17     {
18         xx++;
19         return NULL;
20     }
21     Tree *r=new Tree;
22     r->c=*xx++;
23     r->lt=creat(xx);
24     r->rt=creat(xx);
25     return r;
26 }
27 
28 void cxvisit(Tree *r)
29 {
30     Tree *que[100];
31     int i=0,j=0;
32     que[j++]=r;
33     while(i<j)
34     {
35         if(que[i])
36         {
37             que[j++]=que[i]->lt;
38             que[j++]=que[i]->rt;
39             printf("%c",que[i]->c);
40         }
41         i++;
42     }
43 }
44 
45 int main()
46 {
47     Tree *root;
48     int n;
49     scanf("%d",&n);
50     char xx[55],*p;
51     while(n--)
52     {
53         p=xx;
54         scanf("%s",xx);
55         root=creat(p);
56         cxvisit(root);
57         printf("\n");
58     }
59     return 0;
60 }
61 
62 /***************************************************
63 User name: ***
64 Result: Accepted
65 Take time: 0ms
66 Take Memory: 156KB
67 Submit time: 2016-11-03 18:35:52
68 ****************************************************/