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refactor: Extend vector.h implementation (#818)
* Update vector.h 增加功能列表: 获取向量的第 i 个元素 设置向量的第 i 个元素 向量扩容 向量缩容 向量插入元素 向量删除元素 向量交换元素 向量是否为空 向量是否已满 向量是否相等 对向量内部进行排序(升序/降序) 对向量某段数据排序(升序/降序) * Create hanota.c * 新增binary_search_recur.c * Update vector.h * Delete codes/c/chapter_divide_and_conquer directory * Update vector.h * Create binary_search_recur.c * Delete codes/chapter_divide_and_conquer directory * Update vector.h * Update vector.h
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/**
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* File: vector.h
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* Created Time: 2023-07-13
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* Author: Gonglja (glj0@outlook.com)
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* Author: Zuoxun (845242523@qq.com)、Gonglja (glj0@outlook.com)
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*/
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#ifndef VECTOR_H
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@ -29,6 +29,21 @@ vector *newVector() {
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return v;
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}
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/* 构造向量,指定大小、元素默认值 */
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vector *_newVector(int size, void *elem, int elemSize) {
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vector *v = malloc(sizeof(vector));
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v->size = size;
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v->capacity = size;
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v->depth = 1;
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v->data = malloc(v->capacity * sizeof(void *));
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for (int i = 0; i < size; i++) {
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void *tmp = malloc(sizeof(char) * elemSize);
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memcpy(tmp, elem, elemSize);
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v->data[i] = tmp;
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}
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return v;
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}
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/* 析构向量 */
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void delVector(vector *v) {
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if (v) {
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@ -83,21 +98,123 @@ int vectorSize(vector *v) {
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/* 获取向量的尾元素 */
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void *vectorBack(vector *v) {
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return v->data[v->size];
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int n = v->size;
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return n > 0 ? v->data[n - 1] : NULL;
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}
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/* 获取向量的头元素 */
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void *vectorFront(vector *v) {
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return v->data[0];
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return v->size > 0 ? v->data[0] : NULL;
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}
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/* 获取向量下标 pos 的元素 */
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void *vectorAt(vector *v, int pos) {
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if (pos < 0 || pos >= v->size) {
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printf("vectorAt: out of range\n");
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return NULL;
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}
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return v->data[pos];
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}
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/* 设置向量下标 pos 的元素 */
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void vectorSet(vector *v, int pos, void *elem, int elemSize) {
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if (pos < 0 || pos >= v->size) {
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printf("vectorSet: out of range\n");
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return;
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}
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free(v->data[pos]);
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void *tmp = malloc(sizeof(char) * elemSize);
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memcpy(tmp, elem, elemSize);
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v->data[pos] = tmp;
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}
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/* 向量扩容 */
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void vectorExpand(vector *v) {
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v->capacity *= 2;
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v->data = realloc(v->data, v->capacity * sizeof(void *));
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}
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/* 向量缩容 */
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void vectorShrink(vector *v) {
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v->capacity /= 2;
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v->data = realloc(v->data, v->capacity * sizeof(void *));
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}
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/* 在向量下标 pos 处插入元素 */
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void vectorInsert(vector *v, int pos, void *elem, int elemSize) {
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if (v->size == v->capacity) {
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vectorExpand(v);
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}
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for (int j = v->size; j > pos; j--) {
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v->data[j] = v->data[j - 1];
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}
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void *tmp = malloc(sizeof(char) * elemSize);
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memcpy(tmp, elem, elemSize);
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v->data[pos] = tmp;
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v->size++;
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}
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/* 删除向量下标 pos 处的元素 */
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void vectorErase(vector *v, int pos) {
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if (v->size != 0) {
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free(v->data[pos]);
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for (int j = pos; j < v->size - 1; j++) {
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v->data[j] = v->data[j + 1];
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}
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v->size--;
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}
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}
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/* 向量交换元素 */
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void vectorSwap(vector *v, int i, int j) {
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void *tmp = v->data[i];
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v->data[i] = v->data[j];
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v->data[j] = tmp;
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}
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/* 向量是否为空 */
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bool vectorEmpty(vector *v) {
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return v->size == 0;
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}
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/* 向量是否已满 */
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bool vectorFull(vector *v) {
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return v->size == v->capacity;
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}
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/* 向量是否相等 */
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bool vectorEqual(vector *v1, vector *v2) {
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if (v1->size != v2->size) {
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printf("size not equal\n");
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return false;
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}
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for (int i = 0; i < v1->size; i++) {
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void *a = v1->data[i];
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void *b = v2->data[i];
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if (memcmp(a, b, sizeof(a)) != 0) {
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printf("data %d not equal\n", i);
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return false;
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}
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}
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return true;
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}
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/* 对向量内部进行排序 */
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void vectorSort(vector *v, int (*cmp)(const void *, const void *)) {
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qsort(v->data, v->size, sizeof(void *), cmp);
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}
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/* 打印函数, 需传递一个打印变量的函数进来 */
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/* 当前仅支持打印深度为 1 的 vector*/
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/* 当前仅支持打印深度为 1 的 vector */
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void printVector(vector *v, void (*printFunc)(vector *v, void *p)) {
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if (v) {
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if (v->depth == 0) {
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return;
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} else if (v->depth == 1) {
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if(v->size == 0) {
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printf("\n");
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return;
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}
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for (int i = 0; i < v->size; i++) {
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if (i == 0) {
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printf("[");
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@ -139,4 +256,4 @@ void printVectorMatrix(vector *vv, void (*printFunc)(vector *v, void *p)) {
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}
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#endif
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#endif // VECTOR_H
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#endif // VECTOR_H
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