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142 lines
3.3 KiB
142 lines
3.3 KiB
#include "list.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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list_t *create_list(void) {
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list_t *list = malloc(sizeof(list_t));
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if (!list) {
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return NULL;
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}
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list->capacity = 10;
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list->length = 0;
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list->items = malloc(sizeof(void*) * list->capacity);
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return list;
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}
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static void list_resize(list_t *list) {
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if (list->length == list->capacity) {
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list->capacity += 10;
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list->items = realloc(list->items, sizeof(void*) * list->capacity);
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}
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}
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void list_free(list_t *list) {
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if (list == NULL) {
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return;
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}
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free(list->items);
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free(list);
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}
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void list_foreach(list_t *list, void (*callback)(void *item)) {
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if (list == NULL || callback == NULL) {
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return;
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}
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for (int i = 0; i < list->length; i++) {
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callback(list->items[i]);
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}
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}
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void list_add(list_t *list, void *item) {
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list_resize(list);
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list->items[list->length++] = item;
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}
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void list_insert(list_t *list, int index, void *item) {
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list_resize(list);
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memmove(&list->items[index + 1], &list->items[index], sizeof(void*) * (list->length - index));
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list->length++;
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list->items[index] = item;
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}
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void list_del(list_t *list, int index) {
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list->length--;
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memmove(&list->items[index], &list->items[index + 1], sizeof(void*) * (list->length - index));
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}
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void list_cat(list_t *list, list_t *source) {
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int i;
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for (i = 0; i < source->length; ++i) {
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list_add(list, source->items[i]);
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}
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}
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void list_empty(list_t *list) {
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list->capacity = 10;
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list->length = 0;
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free(list->items);
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list->items = malloc(sizeof(void*) * list->capacity);
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}
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void list_qsort(list_t *list, int compare(const void *left, const void *right)) {
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qsort(list->items, list->length, sizeof(void *), compare);
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}
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int list_seq_find(list_t *list, int compare(const void *item, const void *data), const void *data) {
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for (int i = 0; i < list->length; i++) {
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void *item = list->items[i];
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if (compare(item, data) == 0) {
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return i;
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}
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}
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return -1;
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}
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void list_swap(list_t *list, int src, int dest) {
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void *tmp = list->items[src];
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list->items[src] = list->items[dest];
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list->items[dest] = tmp;
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}
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static void list_rotate(list_t *list, int from, int to) {
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void *tmp = list->items[to];
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while (to > from) {
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list->items[to] = list->items[to - 1];
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to--;
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}
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list->items[from] = tmp;
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}
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static void list_inplace_merge(list_t *list, int left, int last, int mid, int compare(const void *a, const void *b)) {
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int right = mid + 1;
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if (compare(&list->items[mid], &list->items[right]) <= 0) {
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return;
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}
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while (left <= mid && right <= last) {
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if (compare(&list->items[left], &list->items[right]) <= 0) {
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left++;
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} else {
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list_rotate(list, left, right);
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left++;
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mid++;
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right++;
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}
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}
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}
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static void list_inplace_sort(list_t *list, int first, int last, int compare(const void *a, const void *b)) {
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if (first >= last) {
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return;
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} else if ((last - first) == 1) {
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if (compare(&list->items[first], &list->items[last]) > 0) {
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list_swap(list, first, last);
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}
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} else {
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int mid = (int)((last + first) / 2);
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list_inplace_sort(list, first, mid, compare);
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list_inplace_sort(list, mid + 1, last, compare);
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list_inplace_merge(list, first, last, mid, compare);
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}
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}
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void list_stable_sort(list_t *list, int compare(const void *a, const void *b)) {
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if (list->length > 1) {
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list_inplace_sort(list, 0, list->length - 1, compare);
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}
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}
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