81 lines
2.4 KiB
C
81 lines
2.4 KiB
C
#include "a_station.h"
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#include <stdlib.h>
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#include <string.h>
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struct station* create_station(){
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struct station* station = (struct station*)calloc(1,sizeof(struct station));
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station->tracks = (struct car**)calloc(STATION_SIZE, sizeof(struct car*));
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station->track_count = STATION_SIZE;
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return station;
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}
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void destroy_station(struct station* station){
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for (int i = 0; i < station->track_count; i++) {
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struct car* eto = station->tracks[i];
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while (eto != NULL) {
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struct car* delete = eto;
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eto = delete->next;
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free(delete);
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}
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}
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free(station->tracks);
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free(station);
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}
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int select_track(struct station* station, const char* target){
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unsigned int hash = 0;
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for (int i = 0; target[i]; i++) {
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hash = (hash * 31) + target[i];
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}
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return hash % station->track_count;
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}
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void add_target_capacity(struct station* station,const char* target, int capacity){
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int track = select_track(station, target);
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struct car* new_car = (struct car*)malloc(sizeof(struct car));
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strncpy(new_car->value, target, TARGET_SIZE);
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new_car->capacity = capacity;
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new_car->next = station->tracks[track];
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station->tracks[track] = new_car;
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}
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int get_target_capacity(struct station* station,const char* target){
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int track = select_track(station, target);
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struct car* aktualna = station->tracks[track];
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while (aktualna != NULL) {
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if (strcmp(aktualna->value, target) == 0) {
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return aktualna->capacity;
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}
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aktualna = aktualna->next;
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}
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return 0;
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}
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int count_targets(struct station* station){
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int count = 0;
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for (int i = 0; i < station->track_count; i++) {
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struct car* aktualna = station->tracks[i];
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while (aktualna != NULL) {
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count++;
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aktualna = aktualna->next;
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}
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}
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return count;
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}
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int count_capacity(struct station* station){
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int total_capacity = 0;
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for (int i = 0; i < station->track_count; i++) {
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struct car* aktualna = station->tracks[i];
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while (aktualna != NULL) {
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total_capacity += aktualna->capacity;
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aktualna = aktualna->next;
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}
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}
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return total_capacity;
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}
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