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#include<stdio.h>
#include <malloc.h>
#include <windows.h>
#include <iostream>
using namespace std;
#define M 5
enum etat {Doublon,EchecRecherche,Succes,InsererCle}; // declaration de type enum pour les etats de cles (insertions)
struct noeud // declaration structure noeud
{
int n;
char *cle[M-1];
struct noeud *p[M];
}*racine=NULL;
int recherchePos(char cle[30], char *champs[M-1], int n)
{
int pos=0;
while (pos < n && (strcmp(cle, champs[pos])>0))
pos++;
return pos;
}
void recherche(char cle[30])
{
int pos, i, n;
struct noeud *ptr = racine;
while (ptr)
{
n = ptr->n;
pos = recherchePos(cle, ptr->cle, n);
if (pos < n && (strcmp(cle, ptr->cle[pos])==0))
{
printf("la position est %d\n",pos+1);
return;
}
ptr = ptr->p[pos];
}
printf(" %s n'existe pas .\n",cle);
}
enum etat ins(struct noeud *ptr, char cle[30], char cletmp[30],struct noeud **nouveau_noeud)
{
struct noeud *newPtr, *lastPtr;
int pos, i, n, MPos;
char nlle_cle[30], dern_cle[30];
enum etat valeur;
if (ptr == NULL)
{
*nouveau_noeud = NULL;
strcpy(cletmp, cle);
return InsererCle;
}
n = ptr->n;
pos = recherchePos(cle, ptr->cle, n);
if (pos < n && (strcmp(cle, ptr->cle[pos]) ==0))
return Doublon;
valeur = ins(ptr->p[pos], cle, nlle_cle, &newPtr);
if (valeur != InsererCle)
return valeur;
if (n < M - 1)
{
pos = recherchePos(nlle_cle, ptr->cle, n);
for (i=n; i>pos; i--)
{
strcpy(ptr->cle[i],ptr->cle[i-1]);
ptr->p[i+1] = ptr->p[i];
}
strcpy(ptr->cle[pos], nlle_cle);
ptr->p[pos+1] = newPtr;
++ptr->n;
return Succes;
}
if (pos == M - 1)
{
strcpy(dern_cle, nlle_cle);
lastPtr = newPtr;
}
else
{
strcpy(dern_cle, ptr->cle[M-2]);
lastPtr = ptr->p[M-1];
for (i=M-2; i>pos; i--)
{
strcpy(ptr->cle[i], ptr->cle[i-1]);
ptr->p[i+1] = ptr->p[i];
}
strcpy(ptr->cle[pos], nlle_cle);
ptr->p[pos+1] = newPtr;
}
MPos = (M - 1)/2;
strcpy(cletmp, ptr->cle[MPos]);
(*nouveau_noeud)= new noeud;//(noeud*)malloc(sizeof(struct noeud));
ptr->n = MPos;
(*nouveau_noeud)->n = M-1-MPos;
for (i=0; i < (*nouveau_noeud)->n; i++)
{
(*nouveau_noeud)->p[i] = ptr->p[i + MPos + 1];
if(i < (*nouveau_noeud)->n - 1)
strcpy((*nouveau_noeud)->cle[i], ptr->cle[i + MPos + 1]);
else
strcpy((*nouveau_noeud)->cle[i], dern_cle);
}
(*nouveau_noeud)->p[(*nouveau_noeud)->n] = lastPtr;
return InsererCle;
}
void insertion(char cle[30])
{
struct noeud *nouveau_noeud;
char cletmp[30];
enum etat valeur;
valeur = ins(racine, cle, cletmp, &nouveau_noeud);
if (valeur == Doublon)
cout<<"doublon !"<<endl;
if (valeur == InsererCle)
{
struct noeud *nouvelle_racine = racine;
racine=(noeud*) malloc(sizeof(struct noeud));
racine->n = 1;
strcpy(racine->cle[0], cletmp);
racine->p[0] = nouvelle_racine;
racine->p[1] = nouveau_noeud;
}
}
void affichage(struct noeud *ptr)
{
if (ptr)
{
int i;
for (i=0; i <= ptr->n; i++)
affichage(ptr->p[i]);
for (i=0; i < ptr->n; i++)
cout<<ptr->cle[i]<<" ";
cout<<endl;
}
}
int main()
{
char c;
char cle[30];
int choix;
while ( 1 )
{
cout<<"*******menu*****"<<endl;
cout<<"1 = ajout"<<endl;
cout<<"2 = Rechercher"<<endl;
cout<<"3 = Affichage"<<endl;
cout<<"4=Quitter\n\n"<<endl;
cout<<"votre choix : ";
cin>>choix;
switch ( choix )
{
case 1:
do
{
cout<<"donnez la cle : ";
cin>>cle;
insertion(cle);
cout<<"voulez vous continuer (O/N): ";
cin>>c;
}while((c == 'O')||(c == 'o'));
break;
case 2:
cout<<"Entrer la cle : ";
cin>>cle;
recherche(cle);
break;
case 3:
cout<<"L'arbre est:\n\n\n";
affichage(racine);
break;
case 4:
return 0;
default:
cout<<" Erreur !\n\n";
break;
}
}
return 0;
} |
