PAT1004 Counting Leaves (30) 数组链式建树

Posted 2020-08-09

一开始尝试用二叉树，最后用结构

struct node{
int k;
int son[101];
};

son[i]记录子结点

#include<stdio.h>
#include<string.h>
struct node{
    int k;
    int son[101];
};
int height(struct node tree[],int root){//家族最大的代数 
    if(tree[root].k==0)
    return 1;
    else{
        int max=0;
        for(int i=0;i<tree[root].k;i++)
        if(max<height(tree,tree[root].son[i]))
        max=height(tree,tree[root].son[i]);
        return max+1;
    }
}
int salve(struct node tree[],int level,int root){
    if(tree[root].k!=0&&level==1)
    return 0;
    else if(level==1)
    return 1;
    else{
        int max=0;
        for(int i=0;i<tree[root].k;i++){
        max+=salve(tree,level-1,tree[root].son[i]);
        }
        return max;
    }
};
int main(){
    struct node tree[101];
    memset(tree,0,101*sizeof(struct node));
    int n,m,id,k,count;//0 < N < 100, the number of nodes in a tree, and M (< N), the number of non-leaf nodes.
    scanf("%d%d",&n,&m);
    
    for(int i1=0;i1<m;i1++){//输入m行，建树 ????有问题 
        scanf("%d%d",&id,&k);
        tree[id].k=k;
        for(int i2=0;i2<tree[id].k;i2++){
            scanf("%d",&tree[id].son[i2]);
        }
    }
    
    int max=height(tree,01);
    
    for(int i=1;i<=max;i++){
        if(i!=1)
        printf(" %d",salve(tree,i,01));
        else
        printf("%d",salve(tree,i,01));      
    }
    
    return 0;
}