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Arvores de Busca Binaria
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/* URI Online Judge | 1195 | |
** | |
** Árvore Binária de Busca | |
** | |
** By Itacir Ferreira Pompeu | |
** | |
** Instituto Federal Goiano Campus Morrinhos | |
*/ | |
#include <cstdio> | |
#include <cstdlib> | |
struct tree{ | |
int node; | |
struct tree *left; | |
struct tree *right; | |
}; | |
tree *raiz; | |
tree * visita_raiz(tree *ra, tree *r, int valor){ | |
if(r == NULL){ | |
r = (tree *) malloc(sizeof(tree)); | |
r->left = NULL; | |
r->right = NULL; | |
r->node = valor; | |
if(ra == NULL){ | |
return r; | |
} | |
if(valor < ra->node){ | |
ra->left = r; | |
} | |
else{ | |
ra->right = r; | |
} | |
return r; | |
} | |
if(valor < r->node){ | |
visita_raiz(r,r->left,valor); | |
} | |
else{ | |
visita_raiz(r,r->right,valor); | |
} | |
} | |
void incluir(int valor){ | |
if(raiz == NULL){ | |
raiz = visita_raiz(raiz,raiz,valor); | |
}else{ | |
visita_raiz(raiz,raiz,valor); | |
} | |
} | |
void preordem(tree *pNo){ | |
if (pNo != NULL){ | |
printf(" %d", pNo->node); | |
preordem(pNo->left); | |
preordem(pNo->right); | |
} | |
} | |
void posordem(tree *pNo){ | |
if (pNo != NULL){ | |
posordem(pNo->left); | |
posordem(pNo->right); | |
printf(" %d", pNo->node); | |
} | |
} | |
void emordem(tree *pNo){ | |
if (pNo != NULL){ | |
emordem(pNo->left); | |
printf(" %d", pNo->node); | |
emordem(pNo->right); | |
} | |
} | |
int main(void){ | |
int n,tam,cases = 0,valor; | |
scanf("%i",&n); | |
while(n--){ | |
cases++; | |
scanf("%i",&tam); | |
while(tam--){ | |
scanf("%i",&valor); | |
incluir(valor); | |
} | |
printf("Case %i:\n",cases); | |
printf("Pre.:");preordem(raiz); | |
puts(""); | |
printf("In..:");emordem(raiz); | |
puts(""); | |
printf("Post:");posordem(raiz); | |
puts("\n"); | |
raiz = NULL; | |
} | |
return 0; | |
} |
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