Update cv6/a_station.c
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							| @ -1,95 +1,95 @@ | ||||
| 
 | ||||
| #include <stdio.h> | ||||
| #include "a_station.h" | ||||
| #include <stdlib.h> | ||||
| #include <string.h> | ||||
| #include "a_station.h" | ||||
| 
 | ||||
| // Функция для создания новой станции
 | ||||
| // Создаёт пустую станцию
 | ||||
| struct station* create_station() { | ||||
|     struct station* station = calloc(1, sizeof(struct station)); | ||||
|     station->tracks = calloc(STATION_SIZE, sizeof(struct car*)); | ||||
|     struct station* station = (struct station*)calloc(1, sizeof(struct station)); | ||||
|     station->tracks = (struct car**)calloc(STATION_SIZE, sizeof(struct car*)); | ||||
|     station->track_count = STATION_SIZE; | ||||
|     return station; | ||||
| } | ||||
| 
 | ||||
| // Функция для вычисления индекса колеи на основе названия станции
 | ||||
| int select_track(struct station* station, const char* target) { | ||||
|     int hash = 0; | ||||
|     while (*target) { | ||||
|         hash += (unsigned char)(*target++); | ||||
|     } | ||||
|     return hash % station->track_count; | ||||
| } | ||||
| 
 | ||||
| // Функция для добавления записи о вместимости станции
 | ||||
| void add_target_capacity(struct station* station, const char* target, int capacity) { | ||||
|     int track = select_track(station, target); | ||||
|     struct car* current = station->tracks[track]; | ||||
|     struct car* prev = NULL; | ||||
| 
 | ||||
|     // Поиск станции в цепочке
 | ||||
|     while (current != NULL) { | ||||
|         if (strcmp(current->value, target) == 0) { | ||||
|             current->capacity += capacity;  // Обновляем вместимость
 | ||||
|             return; | ||||
|         } | ||||
|         prev = current; | ||||
|         current = current->next; | ||||
|     } | ||||
| 
 | ||||
|     // Если станции не существует, создаем новый элемент
 | ||||
|     struct car* new_car = malloc(sizeof(struct car)); | ||||
|     new_car->capacity = capacity; | ||||
|     strcpy(new_car->value, target); | ||||
|     new_car->next = NULL; | ||||
| 
 | ||||
|     // Добавляем новый элемент в цепочку
 | ||||
|     if (prev == NULL) { | ||||
|         station->tracks[track] = new_car; | ||||
|     } else { | ||||
|         prev->next = new_car; | ||||
|     } | ||||
| } | ||||
| 
 | ||||
| // Функция для поиска вместимости станции по названию
 | ||||
| int find_capacity(struct station* station, const char* target) { | ||||
|     int track = select_track(station, target); | ||||
|     struct car* current = station->tracks[track]; | ||||
| 
 | ||||
|     // Поиск элемента в цепочке
 | ||||
|     while (current != NULL) { | ||||
|         if (strcmp(current->value, target) == 0) { | ||||
|             return current->capacity; | ||||
|         } | ||||
|         current = current->next; | ||||
|     } | ||||
|     return -1;  // Если станция не найдена, возвращаем -1
 | ||||
| } | ||||
| 
 | ||||
| // Функция для освобождения памяти, выделенной для станции
 | ||||
| // Освобождает всю память
 | ||||
| void destroy_station(struct station* station) { | ||||
|     for (int i = 0; i < station->track_count; i++) { | ||||
|         struct car* current = station->tracks[i]; | ||||
|         while (current != NULL) { | ||||
|             struct car* temp = current; | ||||
|         while (current) { | ||||
|             struct car* to_free = current; | ||||
|             current = current->next; | ||||
|             free(temp); | ||||
|             free(to_free); | ||||
|         } | ||||
|     } | ||||
|     free(station->tracks); | ||||
|     free(station); | ||||
| } | ||||
| 
 | ||||
| // Функция для вывода информации о станции
 | ||||
| void print_station(struct station* station) { | ||||
|     printf("station>>>\n"); | ||||
| // Хеш-функция для выбора пути на основе названия конечной станции
 | ||||
| int select_track(struct station* station, const char* target) { | ||||
|     int hash = 0; | ||||
|     for (int i = 0; target[i] != '\0'; i++) { | ||||
|         hash = (hash + target[i]) % station->track_count; | ||||
|     } | ||||
|     return hash; | ||||
| } | ||||
| 
 | ||||
| // Добавляет количество пассажиров для указанной станции
 | ||||
| void add_target_capacity(struct station* station, const char* target, int capacity) { | ||||
|     int index = select_track(station, target); | ||||
|     struct car* current = station->tracks[index]; | ||||
|      | ||||
|     while (current) { | ||||
|         if (strcmp(current->value, target) == 0) { | ||||
|             current->capacity += capacity; | ||||
|             return; | ||||
|         } | ||||
|         current = current->next; | ||||
|     } | ||||
|      | ||||
|     struct car* new_car = (struct car*)malloc(sizeof(struct car)); | ||||
|     strncpy(new_car->value, target, TARGET_SIZE - 1); | ||||
|     new_car->value[TARGET_SIZE - 1] = '\0'; | ||||
|     new_car->capacity = capacity; | ||||
|     new_car->next = station->tracks[index]; | ||||
|     station->tracks[index] = new_car; | ||||
| } | ||||
| 
 | ||||
| // Получает количество пассажиров для указанной станции
 | ||||
| int get_target_capacity(struct station* station, const char* target) { | ||||
|     int index = select_track(station, target); | ||||
|     struct car* current = station->tracks[index]; | ||||
|      | ||||
|     while (current) { | ||||
|         if (strcmp(current->value, target) == 0) { | ||||
|             return current->capacity; | ||||
|         } | ||||
|         current = current->next; | ||||
|     } | ||||
|     return 0; | ||||
| } | ||||
| 
 | ||||
| // Считает количество конечных станций
 | ||||
| int count_targets(struct station* station) { | ||||
|     int count = 0; | ||||
|     for (int i = 0; i < station->track_count; i++) { | ||||
|         struct car* current = station->tracks[i]; | ||||
|         while (current != NULL) { | ||||
|             printf("%s %d -> ", current->value, current->capacity); | ||||
|         while (current) { | ||||
|             count++; | ||||
|             current = current->next; | ||||
|         } | ||||
|         printf("NULL\n"); | ||||
|     } | ||||
|     printf("<<<station\n"); | ||||
|     return count; | ||||
| } | ||||
| 
 | ||||
| // Считает общую вместимость всех записей
 | ||||
| int count_capacity(struct station* station) { | ||||
|     int total_capacity = 0; | ||||
|     for (int i = 0; i < station->track_count; i++) { | ||||
|         struct car* current = station->tracks[i]; | ||||
|         while (current) { | ||||
|             total_capacity += current->capacity; | ||||
|             current = current->next; | ||||
|         } | ||||
|     } | ||||
|     return total_capacity; | ||||
| } | ||||
|  | ||||
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