update this challenge
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juan
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597e1666d3
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1638743663
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@ -18,28 +18,51 @@ typedef struct Genres
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struct Genres *next;
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} Genres;
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const char *genreMap[] = {"Action", "Adventure", "Animation", "Children",
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"Comedy", "Crime", "Documentary", "Drama",
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"Fantasy", "Film-Noir", "Horror", "IMAX", "Musical",
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"Mystery", "Romance", "Sci-Fi", "Thriller",
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"War", "Western"};
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//输入电影风格返回其映射的id
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int movie_style_map(char *style)
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int getGenreID(char *style)
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{
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int index = 0;
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const char *movies[] = {"Action", "Adventure", "Animation", "Children's",
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"Comedy", "Crime", "Documentary", "Drama",
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"Fantasy", "Film-Noir", "Horror", "IMAX", "Musical",
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"Mystery", "Romance", "Sci-Fi", "Thriller",
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"War", "Western"};
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// int index = 0;
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// const char *genreMap[] = {"Action", "Adventure", "Animation", "Children's",
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// "Comedy", "Crime", "Documentary", "Drama",
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// "Fantasy", "Film-Noir", "Horror", "IMAX", "Musical",
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// "Mystery", "Romance", "Sci-Fi", "Thriller",
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// "War", "Western"};
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while (strcmp(movies[index], style) != 0)
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{
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index++;
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// while (strcmp(genreMap[index], style) != 0)
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// {
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// index++;
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// }
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int found = 0;
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int i;
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for (i = 0; i < NUM_GENRES - 1; i++) {
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if (strcmp(genreMap[i], style) == 0) {
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found = 1;
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break;
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}
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}
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if (found == 1) {
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return i;
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}
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else {
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return -1;
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}
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return index;
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}
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// 函数原型
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Movies *appendMovies(Movies *last, int id);
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int getGenreID(int movieID, Genres ** movies); // 传入movieID,输出风格下标
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void clearArrInt(int* arr, int size); // 将所有元素设为0
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Genres *appendGenres(Genres *head, int id);
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void incremendGenres(int count[], int movieID, Genres **movies); // 传入movieID,输出风格下标
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void clearArrInt(int *arr, int size); // 将所有元素设为0
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void parseGenreString(char *inputStr, int movieID, Genres **movies_arr);
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// inputStr: "Adventure|IMAX..." movieID: the id to make genre linked list. movies_arr[]: to store the linked list.
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int main(void)
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{
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@ -59,7 +82,7 @@ int main(void)
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fgets(buf, 256 * sizeof(char), fp);
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// 看每个用户喜欢什么电影
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int userID, movieID;
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int userID, movieID, rating;
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char input[64];
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int loc, loc1;
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while (fgets(buf, 256 * sizeof(char), fp) != NULL)
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@ -85,72 +108,133 @@ int main(void)
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loc++;
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}
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input[loc1] = '\0';
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loc++;
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// ATOI(3) Linux Programmer's Manual ATOI(3)
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// NAMint count[], E
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// atoi, atol, atoll - convert a string to an integer
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movieID = atoi(input);
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// printf("movieID: %d\n", movieID);
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users[userID] = appendMovies(users[userID], movieID);
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// get ratings
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input[0] = '\0';
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loc1 = 0;
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while (buf[loc] != ',')
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{
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input[loc1++] = buf[loc];
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loc++;
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}
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input[loc1] = '\0';
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rating = atoi(input);
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if (rating >= 3)
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{
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printf("Rate: %d, userID: %d, movieID: %d\n", rating, userID, movieID);
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users[userID] = appendMovies(users[userID], movieID);
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}
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}
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fclose(fp);
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fp = fopen("./movies.csv", 'r');
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fp = fopen("./movies.csv", "r");
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// 下标表示电影id
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Genres *movies[NUM_MOVIES];
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// TODO: 仿照我的代码填充*movies数组
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// 李王子写 ok 你写吧
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//
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//
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for(int i=0;i<NUM_MOVIES;i++)
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for (int i = 0; i < NUM_MOVIES; i++)
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{
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movies[i]=NULL;
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movies[i] = NULL;
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}
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char*str=(char*)malloc(256*sizeof(char));
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char *str = (char *)malloc(256 * sizeof(char));
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//读第一行
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fgets(str, 256 * sizeof(char), fp);
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fgets(str, 256 * sizeof(char), fp);
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// fgets() returns s on success, and NULL on error or when end of file
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// occurs while no characters have been read.
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// 你那个该写!=NULL 你看注释
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// ok
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// ok
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int id_index=0;
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int movie_id = 0;
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while(fgets(str,256*sizeof(char),fp)!=NULL)
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while (fgets(str, 256 * sizeof(char), fp) != NULL)
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{
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// get the movie's id
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loc = 0;
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input[0] = '\0';
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while (str[loc] != ',')
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{
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input[loc] = str[loc];
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loc++;
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}
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input[loc++] = '\0'; // 现在loc指向电影名字的第0个字符
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movie_id = atoi(input);
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printf("Debug: movie_id: %d\n", movie_id);
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if (str[loc] == '"')
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{ // in case the title has comma inside.
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loc++;
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while (str[loc] != '"')
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{
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loc++;
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}
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loc += 2; // 现在指向genres第0个字符
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}
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else
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{
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// go to genres
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while (str[loc] != ',')
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loc++;
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loc++; // 现在loc指向风格
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}
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loc1 = 0;
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input[0] = '\0';
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while (str[loc] != '\n' && str[loc] != '\0' && str[loc] != '\r')
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{
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input[loc1++] = str[loc++];
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}
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input[loc1] = '\0';
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parseGenreString(input, movie_id, movies);
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}
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fclose(fp);
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// 开始输出答案到文件answer.txt
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fp = fopen("./answer.txt", 'w+'); // w+: 如果文件已存在先清空
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fp = fopen("./answer.txt", "w+"); // w+: 如果文件已存在先清空
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int count[NUM_GENRES] = {};
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// 开始从第一个用户循环 (1)
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Movies *ptr;
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for (int i = 1; i < NUM_GENRES; i++) {
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cleararrInt(count, NUM_GENRES);
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for (int i = 1; i < NUM_USERS; i++)
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{
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clearArrInt(count, NUM_GENRES);
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// 便历他喜欢的电影
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ptr = users[i];
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while (ptr != NULL) {
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count[getGenreID(ptr->movieID, movies)] ++;
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while (ptr != NULL)
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{
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incremendGenres(count, ptr->movieID, movies);
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printf("Debug: userID: %d, movieID: %d\n", i, ptr->movieID);
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ptr = ptr->next;
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}
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}
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//那个 就是你帮我写的那个数组 我感觉开个一维数组就可以了啊
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// 输出答案
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fprintf(fp, "User id: %d\n", i);
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for (int j = 0; j < NUM_GENRES - 1; j++)
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{
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fprintf(fp, "%s: %d\t", genreMap[j], count[j]);
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}
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fprintf(fp, "\n");
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}
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fclose(fp);
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@ -182,13 +266,79 @@ Movies *appendMovies(Movies *last, int id)
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return last;
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}
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int getGenreID(int movieID, Genres **movies) {
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void incremendGenres(int count[], int movieID, Genres **movies)
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{
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Genres *ptr = movies[movieID];
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while (ptr != NULL)
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{
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count[ptr->genreID]++;
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printf("Debug: movidID: %d, genreID: %d, genre: %s\n", movieID, ptr->genreID, genreMap[ptr->genreID]);
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ptr = ptr->next;
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}
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}
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void clearArrInt(int* arr, int size) {
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for (int i = 0; i < size; i++) {
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void clearArrInt(int *arr, int size)
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{
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for (int i = 0; i < size; i++)
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{
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arr[i] = 0;
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}
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}
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void parseGenreString(char *inputStr, int movieID, Genres **movies_arr)
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{
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// 处理输入的string
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int strLen = strlen(inputStr);
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char buf[64];
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int locPtr = 0;
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printf("Debug: inputStr: %s\n", inputStr);
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int genreID;
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for (int i = 0; i < strLen; i++)
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{
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if (inputStr[i] == '|')
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{ // time to divide the string and make magic happen
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buf[locPtr] = '\0';
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printf("Debug: buf: %s, genreID: %d\n", buf, getGenreID(buf));
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genreID = getGenreID(buf);
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if (genreID != -1)
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movies_arr[movieID] = appendGenres(movies_arr[movieID], genreID);
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locPtr = 0;
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}
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else
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{
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buf[locPtr++] = inputStr[i];
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}
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}
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// do this again
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buf[locPtr] = '\0';
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printf("Debug: buf: %s, genreID: %d\n", buf, getGenreID(buf));
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genreID = getGenreID(buf);
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if (genreID != -1)
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movies_arr[movieID] = appendGenres(movies_arr[movieID], genreID);
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locPtr = 0;
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}
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Genres *appendGenres(Genres *head, int id)
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{
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Genres *new = malloc(sizeof(Genres));
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new->genreID = id;
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new->next = NULL;
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if (head == NULL)
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{
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return new;
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}
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Genres *ptr = head;
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while (ptr->next != NULL)
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{
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ptr = ptr->next;
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}
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ptr->next = new;
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return head;
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}
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