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Your Name 2025-11-14 10:53:17 +01:00
parent dd75d89b13
commit 037734be17
1 changed files with 145 additions and 20 deletions
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165
du5/a_station.c
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@ -1,34 +1,159 @@
#include "a_station.h" #include "a_station.h"
#include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
struct station* create_station(){ int select_track(struct station* station, const char* target)
struct station* station = (struct station*)calloc(1,sizeof(struct station)); {
station->tracks = (struct car**)calloc(STATION_SIZE, sizeof(struct car*)); if (station==NULL || target==NULL)
station->track_count = STATION_SIZE; {
return station; return 0;
}
unsigned long hash=5381;
int c;
while ((c=*target++))
{
hash=((hash<<5)+hash)+c;
}
return (int)(hash % station->track_count);
} }
void destroy_station(struct station* station){ struct station* create_station()
{
struct station* station=(struct station*)malloc(sizeof(struct station));
if (station==NULL)
{
return NULL;
}
station->tracks=(struct car**)calloc(STATION_SIZE, sizeof(struct car*));
if (station->tracks==NULL)
{
free(station);
return NULL;
}
station->track_count=STATION_SIZE;
return station;
} }
int select_track(struct station* station, const char* target){ void destroy_station(struct station* station)
{
if (station==NULL)
{
return;
}
for (int i = 0; i < station->track_count; i++)
{
struct car* current=station->tracks[i];
while (current!=NULL)
{
struct car* next=current->next;
free(current);
current=next;
}
}
free(station->tracks);
free(station);
}
void add_target_capacity(struct station* station, const char* target, int capacity)
{
if (station==NULL || target==NULL)
{
return;
}
int track=select_track(station, target);
if (track<0 || track>=station->track_count)
{
return;
}
struct car* current=station->tracks[track];
struct car* prev=NULL;
while (current!=NULL)
{
if (strcmp(current->value, target)==0)
{
current->capacity+=capacity;
return;
}
prev=current;
current=current->next;
}
struct car* new_car=(struct car*)malloc(sizeof(struct car));
if (new_car==NULL)
{
return;
}
new_car->capacity=capacity;
strncpy(new_car->value, target, TARGET_SIZE-1);
new_car->value[TARGET_SIZE-1]='\0';
new_car->next=NULL;
if (prev==NULL)
{
station->tracks[track]=new_car;
}
else
{
prev->next=new_car;
}
}
int get_target_capacity(struct station* station, const char* target)
{
if (station==NULL || target==NULL)
{
return 0;
}
int track=select_track(station, target);
if (track<0 || track>=station->track_count)
{
return 0;
}
struct car* current=station->tracks[track];
while (current!=NULL)
{
if (strcmp(current->value, target)==0)
{
return current->capacity;
}
current=current->next;
}
return 0; return 0;
} }
void add_target_capacity(struct station* station,const char* target, int capacity){ int count_targets(struct station* station)
{
if (station==NULL)
{
return 0;
}
int count=0;
for (int i = 0; i < station->track_count; i++)
{
struct car* current=station->tracks[i];
while (current!=NULL)
{
count++;
current=current->next;
}
}
return count;
} }
int get_target_capacity(struct station* station,const char* target){ int count_capacity(struct station* station)
return 0; {
if (station==NULL)
{
return 0;
}
int total=0;
for (int i = 0; i < station->track_count; i++)
{
struct car* current=station->tracks[i];
while (current!=NULL)
{
total+=current->capacity;
current=current->next;
}
}
return total;
} }
int count_targets(struct station* station){
return 0;
}
int count_capacity(struct station* station){
return 0;
}