pat1022__字符串查找

主要是对字符串的查找，为了方便并且快速的实现查找，用map会比较方便

同时如何把一个带有空格的字符串变成多个单词也有一个小技巧

char *point=book[i].keyWord;//关键词分离
            while(*point){
    sscanf(point,"%s",str);
    point+=strlen(str)+1;
    string stemp(str);
    mm_keyWord[stemp].push_back(i);
}

#include<stdio.h>
#include<iostream>
#include<queue>
#include<map>
#include<vector>
#include<string>
#include<algorithm>
#include<string.h>
#include<algorithm>
using namespace std;

struct BOOK{
    char ID[9];
    char bname[89];
    char rname[89];
    char keyWord[89];
    char publisher[89];
    char year[6];
}book[10099];


int cmp(BOOK x,BOOK y){
    return strcmp(x.ID,y.ID)<0;
}

int main(){
    int n,m;
    while(scanf("%d",&n)!=EOF){
        int i;
        map<string,vector<int>>mm_bname;
        map<string,vector<int>>mm_rname;
        map<string,vector<int>>mm_keyWord;
        map<string,vector<int>>mm_publisher;
        map<string,vector<int>>mm_year;

        for(i=1;i<=n;i++){
            scanf("%s",book[i].ID);getchar();
            gets(book[i].bname);
            gets(book[i].rname);
            gets(book[i].keyWord);
            gets(book[i].publisher);
            scanf("%s",&book[i].year);
        }
        sort(&book[1],&book[1+n],cmp);
        //key word
        char str[19];
        for(i=1;i<=n;i++){
            string s2(book[i].bname);
            mm_bname[s2].push_back(i);
            string s3(book[i].rname);
            mm_rname[s3].push_back(i);
            string s4(book[i].publisher);
            mm_publisher[s4].push_back(i);
            string s5(book[i].year);
            mm_year[s5].push_back(i);

            char *point=book[i].keyWord;//关键词分离
            while(*point){
                sscanf(point,"%s",str);
                point+=strlen(str)+1;
                string stemp(str);
                mm_keyWord[stemp].push_back(i);
            }
        }

        int num,j;
        scanf("%d",&m);
        for(i=1;i<=m;i++){
            scanf("%d: ",&num);
            gets(str);
            string s1(str);
            printf("%d: %s
",num,str);
            if(num==1){
                for(j=0;j<mm_bname[s1].size();j++){
                    printf("%s
",book[mm_bname[s1][j]].ID);
                }
            }
            if(num==2){
                for(j=0;j<mm_rname[s1].size();j++){
                    printf("%s
",book[mm_rname[s1][j]].ID);
                }
            }
            if(num==3){
                for(j=0;j<mm_keyWord[s1].size();j++){
                    printf("%s
",book[mm_keyWord[s1][j]].ID);
                }
            }
            if(num==4){
                for(j=0;j<mm_publisher[s1].size();j++){
                    printf("%s
",book[mm_publisher[s1][j]].ID);
                }
            }
            if(num==5){
                for(j=0;j<mm_year[s1].size();j++){
                    printf("%s
",book[mm_year[s1][j]].ID);
                }
            }
            if(j==0){
                printf("Not Found
");
            }
        }
    }

    return 0;
}