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new file: lists/double_linked_list.c

Browse Source 
new file:   lists/ejudge/joseph.c
	new file:   lists/ejudge/joseph_full.c
	new file:   lists/ejudge/list3.c
	new file:   lists/ejudge/list3_full.c
	new file:   lists/list.c
	new file:   trees/tree1.c
	new file:   trees/tree2.c
	new file:   trees/tree2_full.c
	new file:   trees/tree4_full.c
remotes/private/master
nihonium 3 years ago
parent 6c827dcff8
commit 6161b74ffc
10 changed files with 1280 additions and 0 deletions
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208
list_and_trees/lists/double_linked_list.c
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#include <stdio.h>
#include <stdlib.h>
typedef int Data;
struct Node {
struct Node * next;
struct Node * prev;
Data data;
};
void list_init(struct Node * list);
void list_insert(struct Node * list, struct Node * t);
void list_insert_before(struct Node * list, struct Node * t);
void list_remove(struct Node * t);
struct Node * list_push_front(struct Node * list, Data d);
struct Node * list_push_back(struct Node * list, Data d);
Data list_pop_front(struct Node * list);
Data list_pop_back(struct Node * list);
Data list_delete(struct Node * t);
void list_print (struct Node * list);
Data list_sum (struct Node * list);
int list_is_empty(struct Node * list);
int list_clear(struct Node * list);
void list_for_each(struct Node * list, void (*func)(Data d, void * param), void * param);
void print_it(Data d, void * parameter);
void sum(Data a, void * s);
void list_init(struct Node * list) {
list->next = list;
list->prev = list;
list->data = -1;
}
void list_print (struct Node * list) {
struct Node *ptr = list->next;
if (ptr == list) {
printf("Empty list\n");
}
else {
while (ptr->next != list) {
printf("%d ", ptr->data);
//printf("%d [%p](prev is %p, next is %p)\n", ptr->data, ptr, ptr->prev, ptr->next);
ptr = ptr->next;
}
printf("%d\n", ptr->data);
//printf("%d [%p](prev is %p, next is %p)\n", ptr->data, ptr, ptr->prev, ptr->next);
}
}
void list_insert(struct Node * list, struct Node * t) {
t->next = list->next;
t->prev = list;
if (t->next != list) {
t->next->prev = t;
}
else {
t->next = list;
list->prev = t;
}
list->next = t;
}
void list_insert_before(struct Node * list, struct Node * t) {
t->next = list;
t->prev = list->prev;
if (t->prev != list) {
t->prev->next = t;
}
else {
t->prev = list;
list->next = t;
}
list->prev = t;
}
void list_remove(struct Node * t) {
t->prev->next = t->next;
t->next->prev = t->prev;
}
struct Node * list_push_front(struct Node * list, Data d) {
struct Node *ptr = list->next;
struct Node *oth = malloc(sizeof(struct Node));
oth->data = d;
oth->next = ptr;
oth->prev = list;
list->next = oth;
ptr->prev = oth;
return list;
}
struct Node * list_push_back(struct Node * list, Data d) {
struct Node *ptr = list->prev;
struct Node *oth = malloc(sizeof(struct Node));
oth->data = d;
oth->next = list;
oth->prev = ptr;
list->prev = oth;
ptr->next = oth;
return list;
}
int list_is_empty(struct Node * list) {
if (list == list->next) {
return 1;
}
return 0;
}
int list_clear(struct Node * list) {
struct Node *ptr = list->next;
struct Node *n;
while (ptr->next != list) {
n = ptr->next;
free(ptr);
ptr = n;
}
list->next = list;
list->prev = list;
return 0;
}
Data list_pop_front(struct Node * list) {
struct Node *ptr = list->next;
Data val = ptr->data;
list->next = ptr->next;
ptr->next->prev = list;
free(ptr);
return val;
}
Data list_pop_back(struct Node * list) {
struct Node *ptr = list->prev;
Data val = ptr->data;
list->prev = ptr->prev;
ptr->prev->next = list;
free(ptr);
return val;
}
Data list_delete(struct Node * t) {
if (t == t->next) {
return -1;
}
t->prev->next = t->next;
t->next->prev = t->prev;
Data val = t->data;
free(t);
return val;
}
void list_for_each(struct Node * list, void (*func)(Data d, void * param), void * param) {
struct Node *ptr = list->next;
while (ptr->next != list) {
func(ptr->data, param);
ptr = ptr->next;
}
}
void sum(Data a, void * s) {
*(Data *)s += a;
}
void print_it(Data d, void * param) {
FILE * fd = param;
fprintf(fd, "%d ", d);
}
Data list_sum (struct Node * list) {
int s = 0;
list_for_each(list, sum, &s);
return s;
}
int list_size(struct Node *list) {
struct Node *ptr = list->next;
if (ptr == list) {
return 0;
}
int len = 1;
while (ptr->next != list) {
ptr = ptr->next;
++len;
}
return len;
}
/*int main() {
struct Node x[10];
struct Node * a = malloc(sizeof(struct Node));
int i;
list_init(a);
for(i=0; i<10; i++) {
x[i].data = i;
list_insert(a, &x[i]);
}
list_print(a);
//while(list_delete(a->next));
list_clear(a);
free(a);
}*/

37
list_and_trees/lists/ejudge/joseph.c
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#include "../double_linked_list.c"
int main() {
int i;
int N ,M;
scanf("%d", &N);
scanf("%d", &M);
struct Node * a = malloc(sizeof(struct Node));
struct Node * res = malloc(sizeof(struct Node));
list_init(a);
list_init(res);
for(i=1; i<=N; i++) {
list_push_back(a, i);
}
struct Node *ptr = a->next;
struct Node *next = NULL;
while (ptr->next != ptr) {
for (i = 0; i < M-1; ++i) {
ptr = ptr->next;
if (ptr == a) {
ptr = ptr->next;
}
}
if (list_size(a) <= 3) {
list_push_back(res, ptr->data);
}
next = ptr->next;
list_delete(ptr);
ptr = next;
}
list_print(res);
while(list_delete(a->next) != -1);
while(list_delete(res->next) != -1);
free(a); free(res);
}

258
list_and_trees/lists/ejudge/joseph_full.c
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#include <stdio.h>
#include <stdlib.h>
typedef int Data;
struct Node {
struct Node * next;
struct Node * prev;
Data data;
};
void list_init(struct Node * list);
void list_insert(struct Node * list, struct Node * t);
void list_insert_before(struct Node * list, struct Node * t);
void list_remove(struct Node * t);
struct Node * list_push_front(struct Node * list, Data d);
struct Node * list_push_back(struct Node * list, Data d);
Data list_pop_front(struct Node * list);
Data list_pop_back(struct Node * list);
Data list_delete(struct Node * t);
void list_print (struct Node * list);
Data list_sum (struct Node * list);
int list_is_empty(struct Node * list);
int list_clear(struct Node * list);
void list_for_each(struct Node * list, void (*func)(Data d, void * param), void * param);
void print_it(Data d, void * parameter);
void sum(Data a, void * s);
void list_init(struct Node * list) {
list->next = list;
list->prev = list;
list->data = -1;
}
void list_print (struct Node * list) {
struct Node *ptr = list->next;
if (ptr == list) {
printf("Empty list\n");
}
else {
while (ptr->next != list) {
printf("%d ", ptr->data);
//printf("%d [%p](prev is %p, next is %p)\n", ptr->data, ptr, ptr->prev, ptr->next);
ptr = ptr->next;
}
printf("%d\n", ptr->data);
//printf("%d [%p](prev is %p, next is %p)\n", ptr->data, ptr, ptr->prev, ptr->next);
}
}
void list_insert(struct Node * list, struct Node * t) {
t->next = list->next;
t->prev = list;
if (t->next != list) {
t->next->prev = t;
}
else {
t->next = list;
list->prev = t;
}
list->next = t;
}
void list_insert_before(struct Node * list, struct Node * t) {
t->next = list;
t->prev = list->prev;
if (t->prev != list) {
t->prev->next = t;
}
else {
t->prev = list;
list->next = t;
}
list->prev = t;
}
void list_remove(struct Node * t) {
t->prev->next = t->next;
t->next->prev = t->prev;
}
struct Node * list_push_front(struct Node * list, Data d) {
struct Node *ptr = list->next;
struct Node *oth = malloc(sizeof(struct Node));
oth->data = d;
oth->next = ptr;
oth->prev = list;
list->next = oth;
ptr->prev = oth;
return list;
}
struct Node * list_push_back(struct Node * list, Data d) {
struct Node *ptr = list->prev;
struct Node *oth = malloc(sizeof(struct Node));
oth->data = d;
oth->next = list;
oth->prev = ptr;
list->prev = oth;
ptr->next = oth;
return list;
}
int list_is_empty(struct Node * list) {
if (list == list->next) {
return 1;
}
return 0;
}
int list_clear(struct Node * list) {
struct Node *ptr = list->next;
struct Node *n;
while (ptr->next != list) {
n = ptr->next;
free(ptr);
ptr = n;
}
list->next = list;
list->prev = list;
return 0;
}
Data list_pop_front(struct Node * list) {
struct Node *ptr = list->next;
Data val = ptr->data;
list->next = ptr->next;
ptr->next->prev = list;
free(ptr);
return val;
}
Data list_pop_back(struct Node * list) {
struct Node *ptr = list->prev;
Data val = ptr->data;
list->prev = ptr->prev;
ptr->prev->next = list;
free(ptr);
return val;
}
Data list_delete(struct Node * t) {
if (t == t->next) {
return -1;
}
t->prev->next = t->next;
t->next->prev = t->prev;
Data val = t->data;
free(t);
return val;
}
void list_for_each(struct Node * list, void (*func)(Data d, void * param), void * param) {
struct Node *ptr = list->next;
while (ptr->next != list) {
func(ptr->data, param);
ptr = ptr->next;
}
}
void sum(Data a, void * s) {
*(Data *)s += a;
}
void print_it(Data d, void * param) {
FILE * fd = param;
fprintf(fd, "%d ", d);
}
Data list_sum (struct Node * list) {
int s = 0;
list_for_each(list, sum, &s);
return s;
}
int list_size(struct Node *list) {
struct Node *ptr = list->next;
if (ptr == list) {
return 0;
}
int len = 1;
while (ptr->next != list) {
ptr = ptr->next;
++len;
}
return len;
}
/*int main() {
struct Node x[10];
struct Node * a = malloc(sizeof(struct Node));
int i;
list_init(a);
for(i=0; i<10; i++) {
x[i].data = i;
list_insert(a, &x[i]);
}
list_print(a);
//while(list_delete(a->next));
list_clear(a);
free(a);
}*/
int main() {
int i;
int N ,M;
scanf("%d", &N);
scanf("%d", &M);
struct Node * a = malloc(sizeof(struct Node));
struct Node * res = malloc(sizeof(struct Node));
list_init(a);
list_init(res);
for(i=1; i<=N; i++) {
list_push_back(a, i);
}
struct Node *ptr = a->next;
struct Node *next = NULL;
int size = N;
while (ptr->next != ptr && ptr->prev != ptr) {
for (i = 0; i < M-1; ++i) {
if (ptr->next == a) {
ptr = ptr->next->next;
}
else {
ptr = ptr->next;
}
}
if (size <= 3) {
list_push_back(res, ptr->data);
}
next = ptr->next;
list_delete(ptr);
if (next == a) {
ptr = next->next;
}
else {
ptr = next;
}
--size;
}
list_print(res);
while(list_delete(a->next) != -1);
while(list_delete(res->next) != -1);
free(a); free(res);
}

54
list_and_trees/lists/ejudge/list3.c
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#include "../double_linked_list.c"
#define MAX 1000000
int main() {
int i, k, l;
struct Node * a = malloc(sizeof(struct Node));
struct Node * b = malloc(sizeof(struct Node));
list_init(a);
list_init(b);
int A[5], B[5];
for (i = 0; i < 5; ++i) {
scanf("%d", &A[i]);
list_push_back(a, A[i]);
}
for (i = 0; i < 5; ++i) {
scanf("%d", &B[i]);
list_push_back(b, B[i]);
}
for (i = 0;; ++i) {
if (i == MAX) {
printf("botva\n");
return 0;
}
if (list_size(a) == 0) {
printf("second %d\n", i);
return 0;
}
if (list_size(b) == 0) {
printf("first %d\n", i);
return 0;
}
k = list_pop_front(a);
l = list_pop_front(b);
if (k == 10 || l == 0) {
list_push_back(b, k);
list_push_back(b, l);
}
else if (k == 0 || l == 10) {
list_push_back(a, k);
list_push_back(a, l);
}
else if (k > l) {
list_push_back(a, l);
list_push_back(a, k);
}
else {
list_push_back(b, k);
list_push_back(b, l);
}
}
}

253
list_and_trees/lists/ejudge/list3_full.c
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#include <stdio.h>
#include <stdlib.h>
typedef int Data;
struct Node {
struct Node * next;
struct Node * prev;
Data data;
};
void list_init(struct Node * list);
void list_insert(struct Node * list, struct Node * t);
void list_insert_before(struct Node * list, struct Node * t);
void list_remove(struct Node * t);
struct Node * list_push_front(struct Node * list, Data d);
struct Node * list_push_back(struct Node * list, Data d);
Data list_pop_front(struct Node * list);
Data list_pop_back(struct Node * list);
Data list_delete(struct Node * t);
void list_print (struct Node * list);
Data list_sum (struct Node * list);
int list_is_empty(struct Node * list);
int list_clear(struct Node * list);
void list_for_each(struct Node * list, void (*func)(Data d, void * param), void * param);
void print_it(Data d, void * parameter);
void sum(Data a, void * s);
void list_init(struct Node * list) {
list->next = list;
list->prev = list;
list->data = -1;
}
void list_print (struct Node * list) {
struct Node *ptr = list->next;
if (ptr == list) {
printf("Empty list\n");
}
else {
while (ptr->next != list) {
printf("%d ", ptr->data);
//printf("%d [%p](prev is %p, next is %p)\n", ptr->data, ptr, ptr->prev, ptr->next);
ptr = ptr->next;
}
printf("%d\n", ptr->data);
//printf("%d [%p](prev is %p, next is %p)\n", ptr->data, ptr, ptr->prev, ptr->next);
}
}
void list_insert(struct Node * list, struct Node * t) {
t->next = list->next;
t->prev = list;
if (t->next != list) {
t->next->prev = t;
}
else {
t->next = list;
list->prev = t;
}
list->next = t;
}
void list_insert_before(struct Node * list, struct Node * t) {
t->next = list;
t->prev = list->prev;
if (t->prev != list) {
t->prev->next = t;
}
else {
t->prev = list;
list->next = t;
}
list->prev = t;
}
void list_remove(struct Node * t) {
t->prev->next = t->next;
t->next->prev = t->prev;
}
struct Node * list_push_front(struct Node * list, Data d) {
struct Node *ptr = list->next;
struct Node *oth = malloc(sizeof(struct Node));
oth->data = d;
oth->next = ptr;
oth->prev = list;
list->next = oth;
ptr->prev = oth;
return list;
}
struct Node * list_push_back(struct Node * list, Data d) {
struct Node *ptr = list->prev;
struct Node *oth = malloc(sizeof(struct Node));
oth->data = d;
oth->next = list;
oth->prev = ptr;
list->prev = oth;
ptr->next = oth;
return list;
}
int list_is_empty(struct Node * list) {
if (list == list->next) {
return 1;
}
return 0;
}
int list_clear(struct Node * list) {
struct Node *ptr = list->next;
struct Node *n;
while (ptr->next != list) {
n = ptr->next;
free(ptr);
ptr = n;
}
list->next = list;
list->prev = list;
return 0;
}
Data list_pop_front(struct Node * list) {
struct Node *ptr = list->next;
Data val = ptr->data;
list->next = ptr->next;
ptr->next->prev = list;
free(ptr);
return val;
}
Data list_pop_back(struct Node * list) {
struct Node *ptr = list->prev;
Data val = ptr->data;
list->prev = ptr->prev;
ptr->prev->next = list;
free(ptr);
return val;
}
Data list_delete(struct Node * t) {
if (t->next == t) {
return -1;
}
t->prev->next = t->next;
t->next->prev = t->prev;
Data val = t->data;
free(t);
return val;
}
void list_for_each(struct Node * list, void (*func)(Data d, void * param), void * param) {
struct Node *ptr = list->next;
while (ptr->next != list) {
func(ptr->data, param);
ptr = ptr->next;
}
}
void sum(Data a, void * s) {
*(Data *)s += a;
}
void print_it(Data d, void * param) {
FILE * fd = param;
fprintf(fd, "%d ", d);
}
Data list_sum (struct Node * list) {
int s = 0;
list_for_each(list, sum, &s);
return s;
}
int list_size(struct Node *list) {
struct Node *ptr = list->next;
if (ptr == list) {
return 0;
}
int len = 1;
while (ptr->next != list) {
ptr = ptr->next;
++len;
}
return len;
}
#define MAX 1000000
int main() {
int i, k, l;
struct Node * a = malloc(sizeof(struct Node));
struct Node * b = malloc(sizeof(struct Node));
list_init(a);
list_init(b);
int A[5], B[5];
for (i = 0; i < 5; ++i) {
scanf("%d", &A[i]);
list_push_back(a, A[i]);
}
for (i = 0; i < 5; ++i) {
scanf("%d", &B[i]);
list_push_back(b, B[i]);
}
for (i = 0;; ++i) {
if (i == MAX) {
printf("botva\n");
while(list_delete(a->next) != -1);
while(list_delete(b->next) != -1);
free(a); free(b);
return 0;
}
if (list_size(a) == 0) {
printf("second %d\n", i);
while(list_delete(b->next) != -1);
free(a); free(b);
return 0;
}
if (list_size(b) == 0) {
printf("first %d\n", i);
while(list_delete(a->next) != -1);
free(a); free(b);
return 0;
}
k = list_pop_front(a);
l = list_pop_front(b);
if ((k == 9) && (l == 0)) {
list_push_back(b, k);
list_push_back(b, l);
}
else if ((k == 0) && (l == 9)) {
list_push_back(a, k);
list_push_back(a, l);
}
else if (k > l) {
list_push_back(a, k);
list_push_back(a, l);
}
else {
list_push_back(b, k);
list_push_back(b, l);
}
}
}

185
list_and_trees/lists/list.c
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#include <stdio.h>
#include <stdlib.h>
typedef int Data;
struct Node {
Data val;
struct Node * next;
};
struct List {
struct Node * head;
};
struct List * list_create ();
void list_add_first (struct List * list, Data x);
void list_add_last (struct List * list, Data x);
Data list_remove_first (struct List * list);
Data list_remove_last (struct List * list);
Data list_get_first (struct List * list);
Data list_get_last (struct List * list);
void list_print (struct List * list);
int list_size(struct List * list);
void list_clear(struct List * list);
void list_destroy (struct List * list);
struct List * list_create () {
struct List *list = malloc(sizeof(struct List));
list->head = NULL;
return list;
}
void list_add_last (struct List * list, Data x) {
struct Node *ptr = list->head;
if (ptr == NULL) {
struct Node *oth = malloc(sizeof(struct Node));
oth->val = x;
oth->next = NULL;
list->head = oth;
}
else {
while (ptr->next != NULL) {
ptr = ptr->next;
}
struct Node *oth = malloc(sizeof(struct Node));
oth->val = x;
oth->next = NULL;
ptr->next = oth;
}
}
void list_add_first (struct List * list, Data x) {
struct Node *ptr = list->head;
if (ptr == NULL) {
struct Node *oth = malloc(sizeof(struct Node));
oth->val = x;
oth->next = NULL;
list->head = oth;
}
else {
struct Node *oth = malloc(sizeof(struct Node));
oth->val = x;
oth->next = ptr;
list->head = oth;
}
}
void list_print(struct List * list) {
struct Node *ptr = list->head;
if (ptr == NULL) {
printf("Empty list\n");
}
else {
while (ptr->next != NULL) {
printf("%d ", ptr->val);
ptr = ptr->next;
}
printf("%d\n", ptr->val);
}
}
Data list_remove_first (struct List * list) {
struct Node *ptr = list->head;
Data val = ptr->val;
if (ptr->next == NULL) {
list->head = NULL;
}
else {
list->head = list->head->next;
}
free(ptr);
return val;
}
Data list_remove_last (struct List * list) {
struct Node *ptr = list->head;
Data val;
if (ptr->next == NULL) {
list->head = NULL;
val = ptr->val;
free(ptr);
}
else {
while (ptr->next->next != NULL) {
ptr = ptr->next;
}
struct Node* lastNode = ptr->next;
val = lastNode->val;
ptr->next = NULL;
free(lastNode);
}
return val;
}
Data list_get_first (struct List * list) {
return list->head->val;
}
Data list_get_last (struct List * list) {
struct Node *ptr = list->head;
while (ptr->next != NULL) {
ptr = ptr->next;
}
return ptr->val;
}
int list_size(struct List * list) {
struct Node *ptr = list->head;
if (ptr == NULL) {
return 0;
}
int len = 1;
while (ptr->next != NULL) {
ptr = ptr->next;
++len;
}
return len;
}
void list_clear(struct List * list) {
struct Node *ptr = list->head;
if (ptr == NULL) {
free(ptr);
}
else {
struct Node *next;
while (ptr->next != NULL) {
next = ptr->next;
free(ptr);
ptr = next;
}
}
list->head = NULL;
}
void list_destroy (struct List * list) {
list_clear(list);
free(list);
}
int main() {
struct List * list = list_create();
//printf("%d\n", list_size(list));
list_add_last(list, 5);
list_add_last(list, 6);
list_add_first(list, 3);
list_add_last(list, 8);
list_add_last(list, 9);
list_print(list);
printf("Removed - %d\n", list_remove_first(list));
list_print(list);
printf("Removed - %d\n", list_remove_last(list));
list_print(list);
printf("%d\n", list_get_first(list));
printf("%d\n", list_get_last(list));
printf("%d\n", list_size(list));
//list_clear(list);
list_print(list);
list_destroy(list);
list_print(list);
/*list = list_create();
list_add_first(list, 5);
list_print(list);
list_destroy(list);*/
}

83
list_and_trees/trees/tree1.c
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#include <stdio.h>
#include <stdlib.h>
typedef int Data;
struct Node {
Data val; // данные в узле
struct Node * left; // левый ребенок
struct Node * right; // правый ребенок
};
struct Node * tree_add (struct Node * tree, Data x) {
if (tree == NULL) {
struct Node * data = malloc(sizeof(struct Node));
data->left = NULL; data->right = NULL;
data->val = x;
//printf("Init tree - %d[%p]\n", data->val, data);
return data;
}
if (x < tree->val) {
if (tree->left == NULL) {
struct Node * data = malloc(sizeof(struct Node));
data->left = NULL; data->right = NULL;
data->val = x;
tree->left = data;
//printf("Added - %d [%p] to node %d[%p] left[%p], right[%p]\n", x, data, tree->val, tree, tree->left, tree->right );
}
else {
tree_add(tree->left, x);
}
}
if (x > tree->val) {
if (tree->right == NULL) {
struct Node * data = malloc(sizeof(struct Node));
data->left = NULL; data->right = NULL;
data->val = x;
tree->right = data;
//printf("Added - %d [%p] to node %d[%p] left[%p], right[%p]\n", x, data, tree->val ,tree, tree->left, tree->right );
}
else {
tree_add(tree->right, x);
}
}
return tree;
}
void tree_print (struct Node * tree) {
if (tree != NULL) {
tree_print(tree->left);
printf("%d ", tree->val);
tree_print(tree->right);
}
}
void tree_destroy (struct Node * tree) {
if (tree->left != NULL) {
tree_destroy(tree->left);
}
if(tree->right != NULL) {
tree_destroy(tree->right);
}
free(tree);
}
/*int main() {
struct Node * tree = NULL;
tree = tree_add(tree, 7);
//printf("Tree - [%p]\n", tree);
tree = tree_add(tree, 3);
//printf("Tree - [%p]\n", tree);
tree = tree_add(tree, 2);
tree = tree_add(tree, 1);
tree = tree_add(tree, 9);
tree = tree_add(tree, 5);
tree = tree_add(tree, 4);
tree = tree_add(tree, 6);
tree = tree_add(tree, 8);
//printf("Tree - [%p]\n", tree);
tree_print(tree);
tree_destroy(tree);
} */

13
list_and_trees/trees/tree2.c
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#include "tree1.c"
int main() {
int i;
struct Node * tree = NULL;
scanf("%d", &i);
while (i) {
tree = tree_add(tree, i);
scanf("%d", &i);
}
tree_print(tree);
tree_destroy(tree);
}

95
list_and_trees/trees/tree2_full.c
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#include <stdio.h>
#include <stdlib.h>
typedef int Data;
struct Node {
Data val; // данные в узле
struct Node * left; // левый ребенок
struct Node * right; // правый ребенок
};
struct Node * tree_add (struct Node * tree, Data x) {
if (tree == NULL) {
struct Node * data = malloc(sizeof(struct Node));
data->left = NULL; data->right = NULL;
data->val = x;
//printf("Init tree - %d[%p]\n", data->val, data);
return data;
}
if (x < tree->val) {
if (tree->left == NULL) {
struct Node * data = malloc(sizeof(struct Node));
data->left = NULL; data->right = NULL;
data->val = x;
tree->left = data;
//printf("Added - %d [%p] to node %d[%p] left[%p], right[%p]\n", x, data, tree->val, tree, tree->left, tree->right );
}
else {
tree_add(tree->left, x);
}
}
if (x > tree->val) {
if (tree->right == NULL) {
struct Node * data = malloc(sizeof(struct Node));
data->left = NULL; data->right = NULL;
data->val = x;
tree->right = data;
//printf("Added - %d [%p] to node %d[%p] left[%p], right[%p]\n", x, data, tree->val ,tree, tree->left, tree->right );
}
else {
tree_add(tree->right, x);
}
}
return tree;
}
void tree_print (struct Node * tree) {
if (tree != NULL) {
tree_print(tree->left);
printf("%d ", tree->val);
tree_print(tree->right);
}
}
void tree_destroy (struct Node * tree) {
if (tree->left != NULL) {
tree_destroy(tree->left);
}
if(tree->right != NULL) {
tree_destroy(tree->right);
}
free(tree);
}
/*int main() {
struct Node * tree = NULL;
tree = tree_add(tree, 7);
//printf("Tree - [%p]\n", tree);
tree = tree_add(tree, 3);
//printf("Tree - [%p]\n", tree);
tree = tree_add(tree, 2);
tree = tree_add(tree, 1);
tree = tree_add(tree, 9);
tree = tree_add(tree, 5);
tree = tree_add(tree, 4);
tree = tree_add(tree, 6);
tree = tree_add(tree, 8);
//printf("Tree - [%p]\n", tree);
tree_print(tree);
tree_destroy(tree);
} */
int main() {
int i;
struct Node * tree = NULL;
scanf("%d", &i);
while (i) {
tree = tree_add(tree, i);
scanf("%d", &i);
}
tree_print(tree);
tree_destroy(tree);
}

94
list_and_trees/trees/tree4_full.c
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#include <stdio.h>
#include <stdlib.h>
typedef int Data;
struct Node {
Data val; // данные в узле
struct Node * left; // левый ребенок
struct Node * right; // правый ребенок
};
struct Node * tree_add (struct Node * tree, Data x) {
if (tree == NULL) {
struct Node * data = malloc(sizeof(struct Node));
data->left = NULL; data->right = NULL;
data->val = x;
//printf("Init tree - %d[%p]\n", data->val, data);
return data;
}
if (x < tree->val) {
if (tree->left == NULL) {
struct Node * data = malloc(sizeof(struct Node));
data->left = NULL; data->right = NULL;
data->val = x;
tree->left = data;
//printf("Added - %d [%p] to node %d[%p] left[%p], right[%p]\n", x, data, tree->val, tree, tree->left, tree->right );
}
else {
tree_add(tree->left, x);
}
}
if (x > tree->val) {
if (tree->right == NULL) {
struct Node * data = malloc(sizeof(struct Node));
data->left = NULL; data->right = NULL;
data->val = x;
tree->right = data;
//printf("Added - %d [%p] to node %d[%p] left[%p], right[%p]\n", x, data, tree->val ,tree, tree->left, tree->right );
}
else {
tree_add(tree->right, x);
}
}
return tree;
}
void tree_print (struct Node * tree) {
if (tree != NULL) {
tree_print(tree->left);
printf("%d ", tree->val);
tree_print(tree->right);
}
}
void tree_add_leafs (struct Node * tree, struct Node * * res) {
if (tree != NULL) {
tree_add_leafs(tree->left, res);
if (tree->left == NULL && tree->right == NULL) {
*res = tree_add(*res, tree->val);
}
tree_add_leafs(tree->right, res);
}
}
void tree_destroy (struct Node * tree) {
if (tree != NULL) {
if (tree->left != NULL) {
tree_destroy(tree->left);
}
if(tree->right != NULL) {
tree_destroy(tree->right);
}
free(tree);
}
}
int main() {
int i;
struct Node * tree = NULL;
struct Node * res = NULL;
scanf("%d", &i);
while (i) {
tree = tree_add(tree, i);
scanf("%d", &i);
}
tree_add_leafs(tree, &res);
tree_print(res);
tree_destroy(tree);
tree_destroy(res);
}