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hello-algo/codes/c/utils/vector.h

139 lines
2.9 KiB

feat: Add C codes for the chapter backtracking (#593) * fix(codes/cpp): Memory leak fix: the space was not freed when pop removed the element. * fix(codes/cpp): Fix access error when printArray(arr, 0) * Update PrintUtil.hpp * fix(codes/c): Fix some errors of cmake build * feat(codes/c): Add hashing_search.c * styles(codes/c): Modify function description * styles(codes/c): Modify binary_search.c code style * fix(codes/c): Fix the problem in binary_tree_bfs.c and the problem that the memory is not released. * feat: Add preorder_traversal_i_compact.c * feat(codes/c): Add head_sort.c * feat(codes/c): Add bucket_sort.c * feat(codes/c): Add binary_search_edge.c * fix(codes/c): Add programs that are not managed by cmake (c code) * feat(codes/c): Add selection_sort.c * style(codes/c): Change swap in selection_sort.c to `selectionSort` * styles(codes/c): Change style. * fix(codes/c): Fix some formatting errors and temporarily remove backtracking chapters * feat(codes/c): Add part of the c code in the backtracking chapter * feat(codes/c): Add preorder_traversal_iii_compact.c * feat(codes/c): Add preorder_traversal_iii_template.c * feat(codes/c): Add permutations_i.c * style(codes/c): Adjust the format * feat(codes/c): Add memory release in chapter_backtracking * fix(codes/c): Fix memory release issue. * style(codes/c): Update format and Merge duplicate code * style(code/c): Change print format in preorder_traversal_iii_template.c * Update preorder_traversal_iii_template.c * Update permutations_i.c * feat(codes/c): Remove myArray, use public vector. * feat(codes/c): Add subset_sum_i_naive.c in C codes. * feat(codes/c): Add permutations_i in CMakeLists.txt * feat(codes/c): Update printf function in vector.h. * feat(codes/c): Add subset_sum_i.c and subset_sum_ii.c --------- Co-authored-by: Yudong Jin <krahets@163.com>
1 year ago
/**
* File: vector.h
* Created Time: 2023-07-13
* Author: Gonglja (glj0@outlook.com)
*/
#ifndef VECTOR_H
#define VECTOR_H
#ifdef __cplusplus
extern "C" {
#endif
/* 定义向量类型 */
typedef struct vector {
int size; // 当前向量的大小
int capacity; // 当前向量的容量
int depth; // 当前向量的深度
void **data; // 指向数据的指针数组
} vector;
/* 构造向量 */
vector *newVector() {
vector *v = malloc(sizeof(vector));
v->size = 0;
v->capacity = 4;
v->depth = 1;
v->data = malloc(v->capacity * sizeof(void *));
return v;
}
/* 析构向量 */
void delVector(vector *v) {
if (v) {
if (v->depth == 0) {
return;
} else if (v->depth == 1) {
for (int i = 0; i < v->size; i++) {
free(v->data[i]);
}
free(v);
} else {
for (int i = 0; i < v->size; i++) {
delVector(v->data[i]);
}
v->depth--;
}
}
}
/* 添加元素到向量尾部 */
void vectorPushback(vector *v, void *elem) {
if (v->size == v->capacity) {
v->capacity *= 2;
v->data = realloc(v->data, v->capacity * sizeof(void *));
}
v->data[v->size++] = elem;
}
/* 从向量尾部弹出元素 */
void vectorPopback(vector *v) {
if (v->size != 0) {
v->size--;
}
}
/* 清空向量 */
void vectorClear(vector *v) {
delVector(v);
v->size = 0;
v->capacity = 4;
v->depth = 1;
v->data = malloc(v->capacity * sizeof(void *));
}
/* 获取向量的大小 */
int vectorSize(vector *v) {
return v->size;
}
/* 获取向量的尾元素 */
void *vectorBack(vector *v) {
return v->data[v->size];
}
/* 获取向量的头元素 */
void *vectorFront(vector *v) {
return v->data[0];
}
/* 打印函数, 需传递一个打印变量的函数进来 */
/* 当前仅支持打印深度为 1 的 vector*/
void printVector(vector *v, void (*printFunc)(vector *v, void *p)) {
if (v) {
if (v->depth == 0) {
return;
} else if (v->depth == 1) {
for (int i = 0; i < v->size; i++) {
if (i == 0) {
printf("[");
} else if (i == v->size-1) {
printFunc(v, v->data[i]);
printf("]\r\n");
break;
}
printFunc(v, v->data[i]);
printf(",");
}
} else {
for (int i = 0; i < v->size; i++) {
printVector(v->data[i], printFunc);
}
v->depth--;
}
}
}
/* 当前仅支持打印深度为 2 的 vector */
void printVectorMatrix(vector *vv, void (*printFunc)(vector *v, void *p)) {
printf("[\n");
for (int i = 0; i < vv->size; i++) {
vector *v = (vector *)vv->data[i];
printf(" [");
for (int j = 0; j < v->size; j++) {
printFunc(v, v->data[j]);
if (j != v->size -1)
printf(",");
}
printf("],");
printf("\n");
}
printf("]\n");
}
#ifdef __cplusplus
}
#endif
#endif // VECTOR_H