/* Remove overlapping and repeated subtree entries from the list of subtrees.
* If sscope is not 2 (sub), only remove repeated entries. */
static void
remove_overlapping_subtrees(char **list, int *subtcount, int sscope)
{
size_t ilen, jlen;
int i, j;
int count = *subtcount;
for (i = 0; i < count && list[i] != NULL; i++) {
ilen = strlen(list[i]);
for (j = i + 1; j < count && list[j] != NULL; j++) {
jlen = strlen(list[j]);
/* Remove list[j] if it is identical to list[i] or a subtree of it.
* Remove list[i] if it is a subtree of list[j]. */
if ((ilen == jlen && strcasecmp(list[j], list[i]) == 0) ||
(sscope == 2 && is_subtree(list[j], jlen, list[i], ilen))) {
free(list[j]);
list[j--] = list[count - 1];
list[--count] = NULL;
} else if (sscope == 2 &&
is_subtree(list[i], ilen, list[j], jlen)) {
free(list[i]);
list[i--] = list[count - 1];
list[--count] = NULL;
break;
}
}
}
*subtcount = count;
}
bool
is_subtree(TreeNode* t1, TreeNode* t2)
{
return is_subtree_at(t1, t2)
|| (t1 != NULL && (is_subtree(t1->left, t2)
|| is_subtree(t1->right, t2)));
}
bool is_subtree(struct node *T,struct node *S)
{
if(S==NULL)
return 1;
if(T==NULL)
return 0;
if (is_identical(T,S))
{
return 1;
}
if(is_subtree(T->left,S->left)||is_subtree(T->right,S->right))
{
printf("sub tree");
return 1;
}
else printf("not found");
}
int main()
{
struct node *T = newnode(26);
T->right = newnode(3);
T->right->right = newnode(3);
T->left = newnode(10);
T->left->left = newnode(4);
T->left->left->right = newnode(30);
T->left->right = newnode(6);
struct node *S = newnode(610);
S->right = newnode(68);
S->left = newnode(41);
S->left->right = newnode(360);
if(is_subtree(T,S)==1)
printf("sub tree found");
if(is_subtree(T,S)==0)
printf("sub tree not found");
return 0;
}