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#include<stdio.h>
#include<stdlib.h>
#include<process.h>
#include<string.h>
#include<conio.h>
#define MAX_ROW 10

typedef struct Liste{
int per_no,index;
char isim[20],soyisim[20];
struct Liste *onceki,*sonraki;
}Listeler;

typedef struct Tablo{
Listeler list[MAX_ROW];
}Table;

Table table;

void initialize(){ // ilk bos degerlerin atanmasi
int i;
for(i=0; i<MAX_ROW ;i++){
table.list[i].per_no=-1;
table.list[i].index=-1;
table.list[i].isim[0]='';
table.list[i].soyisim[0]='';
table.list[i].onceki=NULL;
table.list[i].sonraki=NULL;
}
}

int Hash(int no){
int hash_index;
hash_index=no % MAX_ROW;
return hash_index;
}

void Hash_Ekleme(){
int no;
char ad[20],soyad[20];
Listeler *liste,*temp;
FILE *dosya=fopen("Personeller.txt","r");
if(dosya==NULL){
printf("nDosya bulunamadi..");
exit(0);
}
else{
while(!feof(dosya)){
fscanf(dosya,"%d %s %s",&no,ad,soyad);
if(table.list[Hash(no)].index==-1){ //ilk kayit bos ise
table.list[Hash(no)].index=Hash(no);
printf("n%d ",table.list[Hash(no)].index);
table.list[Hash(no)].per_no=no;
printf("%d ",table.list[Hash(no)].per_no);
strcpy(table.list[Hash(no)].isim,ad);
printf("%s ",table.list[Hash(no)].isim);
strcpy(table.list[Hash(no)].soyisim,soyad);
printf("%s n",table.list[Hash(no)].soyisim);
}
else{
liste=(Listeler *)malloc(sizeof(Listeler));
if(liste==NULL){
printf("nBellekte yeterli alan yok..");
exit(0);
}
else{
liste->index=Hash(no); //eklenecek dugum olusturuluyor
printf("n%d ",liste->index);
liste->per_no=no;
printf("%d ",liste->per_no);
strcpy(liste->isim,ad);
printf("%s ",liste->isim);
strcpy(liste->soyisim,soyad);
printf("%s n",liste->soyisim);
liste->sonraki=NULL;
liste->onceki=NULL;
temp=&table.list[Hash(no)]; //dugumler uzerinde gezecek dugum
while(temp->sonraki->per_no<liste->per_no){ //liste -> eklenecek dugum
temp=temp->sonraki;
}
if(temp->sonraki==NULL){ //eger kayit son elemana eklenecek ise
temp->sonraki=liste;
}
temp->sonraki=liste; //cift yonlu bagli listede araya eleman ekleme
liste->onceki=temp;
liste->sonraki=NULL;
}
}
}
}
}

void Hash_Listele(){
int i;
Listeler *liste;
for(i=0;i<MAX_ROW;i++){
if(table.list[i].index!=-1){ //kayit varsa
// printf("n%d %s %s",table.list[i].per_no,table.list[i].isim,table.list[i].soyisim);
printf("n%d = %d %d %",table.list[i].index,table.list[i].per_no,MAX_ROW);
liste=table.list[i].sonraki;
while(liste!=NULL){
// printf(" %d %s %s",table.list[i].sonraki->per_no,table.list[i].sonraki->isim,table.list[i].sonraki->soyisim);
printf("n%d = %d %d % ",liste->index,liste->per_no,MAX_ROW);
liste=liste->sonraki;
}
}
else{ //kayit yoksa
printf("nBulunamadi!");
}
}
}

void Hash_Arama(int no){
int adim=0,hash_index;
hash_index=Hash(no);
Listeler *liste;
adim++;
if(table.list[hash_index].per_no==no){
printf("n%d %s %sn",table.list[hash_index].per_no,table.list[hash_index].isim,table.list[hash_index].soyisim);
printf("%d adimda ulasildi.",adim);
}
else{
liste=table.list[hash_index].sonraki;
while(liste!=NULL){
adim++;
printf("n%d %s %sn",table.list[hash_index].per_no,table.list[hash_index].isim,table.list[hash_index].soyisim);
if(liste->per_no==no){
printf("%d %s %sn",table.list[hash_index].sonraki->per_no,table.list[hash_index].sonraki->isim,table.list[hash_index].sonraki->soyisim);
printf("%d adimda ulasildi.",adim);
}
liste=liste->sonraki;
}
}
if(table.list[hash_index].per_no==-1){
printf("nKayit bulunamadi!");
}
}

void Hash_Silme(int no){
int hash_index;
hash_index=Hash(no);
Listeler *liste;
Listeler *head=&table.list[hash_index];
if(head->per_no==no){
Listeler *temp=head; //ilk dugumun kaybolmamasi icin gecici degisken
head=head->sonraki; //cift yonlu bagli listede bastan eleman silme
head->onceki=NULL;
free(temp);
}
else{
liste=table.list[hash_index].sonraki;
if(liste==NULL){ //kayit bulunamazsa
printf("nSilme islemi basarisiz!");
}
else{
while(liste->per_no!=no){
liste=liste->sonraki;
}
if(liste->sonraki==NULL){ //cift yonlu bagli listede sondan eleman silme.liste suan son dugumu isaret ediyor
Listeler *temp=liste;
liste->onceki->sonraki=NULL;
free(temp);
}
else{ //cift yonlu bagli listede aradan eleman silme
Listeler *temp=liste->onceki;
liste->sonraki=temp->sonraki;
liste->sonraki->onceki=liste->onceki;
free(temp);
}
}
}
}

int Adim_Sayisi(int no){
int adim=0;
Listeler *liste;
adim++;
if(table.list[Hash(no)].per_no==no){
return adim;
}
else{
liste=table.list[Hash(no)].sonraki;
while(liste!=NULL){
adim++;
if(liste->per_no==no){
return adim;
}
liste=liste->sonraki;
}
}
}

int Toplam_Kayit(){
int i,sayac=0;
Listeler *liste;
for(i=0;i<MAX_ROW;i++){
if(table.list[i].index!=-1){
sayac++;
liste=table.list[i].sonraki;
while(liste!=NULL){
sayac++;
liste=liste->sonraki;
}
}
}
return sayac;
}

int Toplam_Adim(){
int i,toplam=0;
Listeler *liste;
for(i=0;i<MAX_ROW;i++){
if(table.list[i].index!=-1){
toplam+=Adim_Sayisi(table.list[i].per_no);
liste=table.list[i].sonraki;
while(liste!=NULL){
toplam+=Adim_Sayisi(liste->per_no);
liste=liste->sonraki;
}
}
}
return toplam;
}

void Hash_Hesapla(){
printf("nOrtalama adim sayisi: %.1f",(float)Toplam_Adim()/Toplam_Kayit());
}

int main(){
char select;
int no,key;
initialize();
while(1){
printf("ne-Kayit ekleme");
printf("nl-Kayitlari listeleme");
printf("na-Kayit arama");
printf("ns-Kayit silme");
printf("nh-Ortalama adim sayisi hesapla");
printf("nc-Cikis");
printf("nSeciminiz: ");
select=getch();
putchar(select);
switch(select){
case 'e':
Hash_Ekleme();
break;
case 'l':
Hash_Listele();
break;
case 'a':
do{
printf("nAramak istediginiz personelin numarasini giriniz: ");
scanf("%d",&no);
}while(no>97 && no<122);
Hash_Arama(no);
break;
case 's':
printf("nSilmek istediginiz personelin numarasini giriniz: ");
scanf("%d",&key);
Hash_Silme(key);
Hash_Listele();
break;
case 'h':
Hash_Hesapla();
break;
case 'c':
printf("nCikis yaptiniz..");
exit(0);
default:
printf("nYanlis secim..");
break;
}
}
return 0;
}
     
 
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