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#include <iostream>
using namespace std;
struct CvorListe
{
int broj;
CvorListe*sljedeci;
CvorListe(){broj=0; sljedeci=NULL;}
};
struct Lista
{
int brElemenata;
CvorListe*glava;
Lista(){brElemenata=0; glava=NULL;}
};
void dodajElement (Lista&l, CvorListe&c)
{
if (l.glava==NULL)
{
l.glava=&c;
l.brElemenata++;
}
else
{
CvorListe*tmp=l.glava;
while (tmp->sljedeci!=NULL)
{
tmp=tmp->sljedeci;
}
tmp->sljedeci=&c;
l.brElemenata++;
}
}
struct HashSlot
{
int kljuc;
int*vrijednost;
HashSlot(){kljuc=0; vrijednost=NULL;}
};
void HashFunkcija (int*kljucevi, int d, HashSlot*tabela, int n)
{
if (n>=d)
{
for (int i=0; i<d; i++)
{
int h=kljucevi[i]%n;
if (tabela[h].vrijednost==NULL)
{
tabela[h].kljuc=kljucevi[i];
tabela[h].vrijednost=&kljucevi[i];
}
else
{
bool pronaden=false;
for (int j=h+1; j<n; j++)
{
if (tabela[j].vrijednost==NULL)
{
tabela[j].kljuc=kljucevi[i];
tabela[j].vrijednost=&kljucevi[i];
pronaden=true;
break;
}
}
if (pronaden==false)
{
for (int j=0; j<h; j++)
{
if (tabela[j].vrijednost==NULL)
{
tabela[j].kljuc=kljucevi[i];
tabela[j].vrijednost=&kljucevi[i];
break;
}
}
}
}
}
}
}
int*pretragaHashTabele (int kljuc, HashSlot*tabela, int n)
{
int h=kljuc%n;
if(tabela[h].kljuc==kljuc && tabela[h].vrijednost!=NULL)
{
return tabela[h].vrijednost;
}
else if(tabela[h].vrijednost==NULL)
{
return NULL;
}
else
{
bool pronaden=false;
for (int k=h+1; k<n; k++)
{
if (tabela[k].vrijednost==NULL)
{
return NULL;
}
else if (tabela[k].kljuc==kljuc && tabela[k].vrijednost!=NULL)
{
pronaden=true;
return tabela[k].vrijednost;
}
}
if (pronaden=false)
{
for (int k=0; k<h; k++)
{
if (tabela[k].kljuc==kljuc && tabela[k].vrijednost!=NULL)
{
return tabela[k].vrijednost;
}
else if (tabela[k].vrijednost==NULL)
{
return NULL;
}
}
}
}
}
void ispisTabele (HashSlot*tabela, int n)
{
for(int i=0; i<n; i++)
{
cout<<i<<". "<<" "<<tabela[i].kljuc<<endl;
}
}
int main()
{
Lista l;
int a=1;
while (a!=0)
{
int *kljucevi= new int [l.brElemenata];
HashSlot*tabela=new HashSlot[l.brElemenata+l.brElemenata];
cout<<"Chose the option that you want"<<endl;
cout<<"Press 0 to close the program"<<endl<<endl;
cout<<"1. Add a number to the list."<<endl;
cout<<"2. Hash the list."<<endl;
cout<<"3. Print hash table."<<endl;
cout<<"4. Search hash table."<<endl;
cout<<endl;
cin>>a;
if (a==1)
{
cout<<"Add a number to the list"<<endl;
CvorListe*c=new CvorListe;
cin>>c->broj;
dodajElement (l, *c);
}
else if (a==2)
{
CvorListe*tmp=l.glava;
for(int i=0; i<l.brElemenata; i++)
{
kljucevi[i]=tmp->broj;
tmp=tmp->sljedeci;
}
for (int i=0; i<l.brElemenata; i++)
{
cout<<kljucevi[i]<<endl;
}
HashFunkcija (kljucevi, l.brElemenata, tabela, l.brElemenata+l.brElemenata);
}
else if (a==3)
{
cout<<"Printing the hash table"<<endl;
ispisTabele (tabela, l.brElemenata+l.brElemenata);
cout<<endl<<endl;
}
else if (a==4)
{
cout<<"Press the number that you want to find."<<endl;
int kljuc;
cin>>kljuc;
int*p=pretragaHashTabele(kljuc, tabela, l.brElemenata+l.brElemenata);
if (p!=NULL)
{
cout<<"Number "<<*p<<" is in the table"<<endl;
}
else
{
cout<<"The number is not located in the table"<<endl;
}
}
else if (a<0 || a>4)
{
cout<<"It has to be a number between 0-4."<<endl<<endl;
}
}
return 0;
}
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