进阶实验4-3.1 家谱处理 (30分)

Posted 2021-03-03 snzhong

 

 

 

 

 

 解题思路：采用结构体来存储家谱

其中需要注意的是祖先和后代的判断

#include <stdio.h>
#include <string.h>
typedef struct {
    char s[71];
    int space;
    int parent;
} Genealogy;
int getparent(Genealogy gene[],int t,int cnt) {//从后向前查找，找到第一个空格相差2个的下标即为双亲下标
    int i;
    for(i=t-1; i>=0; i--) {
        if(cnt-gene[i].space==2) {
            return i;
        }
    }
}
int getPos(Genealogy gene[],int t,char str[]) {//查询所在gene结构体数组中的位置下标
    int i;
    for(i=0; i<t; i++) {
        if(!strcmp(gene[i].s,str))
            return i;
    }
}
int JudgeDe(Genealogy gene[],int t,int pos1,int pos2) {//判断是否存在祖先关系，若判断是否存在后代关系，则只要将pos1和pos2的位置对调即可
    int i=pos1;
    while(i&&gene[i].parent!=pos2) {
        i=gene[i].parent;
    }
    if(gene[i].parent==pos2)
        return 1;
    return 0;

}

int main() {
    int n,m;
    scanf("%d %d
",&n,&m);
    Genealogy gene[n];
    int i,t=0;
    char c[71];
    char str[71];
    for(i=0; i<n; i++) {
        gets(c);
        int j=0,k=0;
        int cnt=0;
        while(c[j]!=‘‘) {
            if(c[j]==‘ ‘) {
                cnt++;
            } else {
                str[k++]=c[j];
            }
            j++;
        }
        str[k]=‘‘;
        strcpy(gene[t].s,str);
        gene[t].space=cnt;
        if(!t)
            gene[t].parent=-1;
        else
            gene[t].parent=getparent(gene,t,cnt);
        t++;
    }
    for(i=0; i<m; i++) {
        char na[71],nb[71],c1[3],c2[4],c3[11],c4[3];
        scanf("%s%s%s%s%s%s",na,c1,c2,c3,c4,nb);
        int pos1=getPos(gene,t,na);
        int pos2=getPos(gene,t,nb);
        int flag=0;
        if(!strcmp(c3,"child")) {
            if(gene[pos1].parent==pos2)
                flag=1;
        } else if(!strcmp(c3,"parent")) {
            if(gene[pos2].parent==pos1)
                flag=1;
        } else if(!strcmp(c3,"sibling")) {
            if(gene[pos1].parent==gene[pos2].parent)
                flag=1;
        } else if(!strcmp(c3,"descendant")) {
            flag=JudgeDe(gene,t,pos1,pos2);
        } else if(!strcmp(c3,"ancestor")) {
            flag=JudgeDe(gene,t,pos2,pos1);
        }
        if(flag)
            printf("True
");
        else
            printf("False
");
    }


    return 0;
}