数据结构实验之二叉树的建立与遍历

不念不忘少年蓝@ 2022-09-25 03:27 154阅读 0赞

![Center][]

#include<stdio.h>
    #include<string.h>
    #include<stdlib.h>
    char a[100];
    int i;
    int count;
    struct node
    {
        int data;
        struct node *lchild;
        struct node *rchild;
    };
    struct node *creat()
    {
        struct node  *root;
        char c;
        c=a[i++];
        if(c==',')
            return NULL;
        else
        {
            root=(struct node *)malloc(sizeof(struct node));
            root->data=c;
            root->lchild=creat();
            root->rchild=creat();
    
        }
        return root;
    }
    void zhong(struct node *root)
    {
        if(root)
        {
            zhong(root->lchild);
            printf("%c",root->data);
            zhong(root->rchild);
        }
    }
    void hou(struct node *root)
    {
        if(root)
        {
            hou(root->lchild);
            hou(root->rchild);
            printf("%c",root->data);
        }
    }
    void leaves(struct node  *root)
    {
    
        if(root!=NULL)
        {
            if(root->lchild==NULL&&root->rchild==NULL)
            {
                count++;
            }
            leaves(root->lchild);
            leaves(root->rchild);
        }
    }
    
    int treedeep(struct node *root)
    {
        int ld,rd;
        if(!root)
            return 0;
        else
        {
            ld = treedeep(root->lchild);
            rd = treedeep(root->rchild);
            if(ld>rd)
                return ld+1;
            else
                return rd+1;
        }
    }
    int main()
    {
    
    
        struct node *root;
        scanf("%s",a);
    
        i=0;
        count=0;
        root=creat();
        zhong(root);
        printf("\n");
        hou(root);
        printf("\n");
        leaves(root);
        printf("%d\n",count);
        printf("%d\n",treedeep(root));
    
    
        return 0;
    }

[Center]: /images/20220718/cf75fdf9ffd84df99189ce5ceec51336.png