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https://github.com/krahets/hello-algo.git
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add C code for graph (#583)
* Create chapter_graph * Delete chapter_graph * add C code for graph * add C code for graph * Create graph_adjacency_list.c add C code for graph * Update CMakeLists.txt * Update format and output * Update format and output * Update format and output * Update format and output * Update format and output * Update format and output * Update format and output * Update format and output * Update format and output * Update format and output * Update format and output * Update format and output * Update format and output * Update format and output * Update format and output * Update graph_adjacency_list.c * Update CMakeLists.txt for c code of graph * Update format of c code * Update format of c code * Update format of c code * Update verticesList Change the data structure of the storage list from a linked list to a linear table * Update graph_adjacency_list.c * Update graph_adjacency_matrix.c * Create graph_adjacency_list_test.c * Create graph_bfs * Update CMakeLists.txt * Update graph_adjacency_list.c
This commit is contained in:
NI-SW
@ -13,3 +13,4 @@ add_subdirectory(chapter_hashing)
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add_subdirectory(chapter_tree)
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add_subdirectory(chapter_searching)
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add_subdirectory(chapter_sorting)
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add_subdirectory(chapter_graph)
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4
codes/c/chapter_graph/CMakeLists.txt
Normal file
4
codes/c/chapter_graph/CMakeLists.txt
Normal file
@ -0,0 +1,4 @@
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add_executable(graph_adjacency_matrix graph_adjacency_matrix.c)
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add_executable(graph_adjacency_list graph_adjacency_list.c)
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add_executable(graph_adjacency_list_test graph_adjacency_list_test.c)
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add_executable(graph_bfs graph_bfs.c)
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301
codes/c/chapter_graph/graph_adjacency_list.c
Normal file
301
codes/c/chapter_graph/graph_adjacency_list.c
Normal file
@ -0,0 +1,301 @@
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/**
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* File: graph_adjacency_list.c
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* Created Time: 2023-07-07
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* Author: NI-SW (947743645@qq.com)
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*/
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#include "../utils/common.h"
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typedef struct Vertex Vertex;
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typedef struct Node Node;
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typedef struct linkList linkList;
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void freeVertex(Vertex *);
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void freeLinklist(linkList *);
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linkList *newLinklist(Vertex *);
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/* 链表节点 */
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struct Node {
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// 链表节点内包含顶点类和下一个节点地址
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Vertex *val;
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Node *next;
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};
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/* 链表节点构造函数 */
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Node *newNode() {
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Node *n = (Node *)malloc(sizeof(Node));
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n->next = 0;
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n->val = 0;
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return n;
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}
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/* 顶点节点类 */
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struct Vertex {
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// 节点值
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int val;
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// 与其它节点相连接的边的链表
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linkList *linked;
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// 索引位，标记该顶点在顶点列表中的索引
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unsigned int pos;
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};
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/* 顶点节点构造函数 */
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Vertex *newVertex(int val) {
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Vertex *v = (Vertex *)malloc(sizeof(Vertex));
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// 为新节点赋值并建立该节点的链表
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v->val = val;
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v->linked = newLinklist(v);
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return v;
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}
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/* 顶点内存释放函数 */
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void freeVertex(Vertex *val) {
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// 释放该顶点和该顶点的链表的内存
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freeLinklist(val->linked);
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free(val);
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}
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/* 链表 */
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struct linkList {
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Node *head;
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Node *tail;
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};
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/* 链表头插法 */
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void pushFront(linkList *l, Vertex *val) {
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Node *temp = newNode();
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temp->val = val;
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temp->next = l->head->next;
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l->head->next = temp;
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if (l->tail == l->head) {
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l->tail = temp;
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}
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}
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/* 链表尾插法 */
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void pushBack(linkList *l, Vertex *val) {
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Node *temp = newNode();
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temp->val = val;
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temp->next = 0;
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l->tail->next = temp;
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l->tail = temp;
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}
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/* 根据顶点地址与该顶点连接的删除边 */
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void removeLink(linkList *l, Vertex *val) {
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Node *temp = l->head->next;
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Node *front = l->head;
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while (temp != 0) {
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if (temp->val == val) {
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front->next = temp->next;
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if (l->tail == temp) {
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l->tail = front;
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}
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free(temp);
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return;
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}
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front = temp;
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temp = temp->next;
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}
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if (temp->next == 0) {
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printf("vertex not found!\n");
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}
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}
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/* 根据索引查找链表中节点 */
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Node *findByindex(linkList *l, unsigned int index) {
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unsigned int i = 0;
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Node *temp = l->head->next;
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while (temp != 0) {
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if (i == index) {
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return temp;
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}
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temp = temp->next;
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i++;
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}
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if (temp->next == 0) {
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printf("vertex not found!\n");
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return 0;
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}
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return 0;
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}
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/* 根据顶点地址删除顶点 */
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void removeNode(linkList *l, Vertex *val) {
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Node *temp = l->head->next;
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Node *front = l->head;
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while (temp != 0) {
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if (temp->val == val) {
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front->next = temp->next;
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if (l->tail == temp) {
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l->tail = front;
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}
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freeVertex(val);
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free(temp);
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return;
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}
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front = temp;
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temp = temp->next;
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}
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if (temp->next == 0) {
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printf("vertex not found!\n");
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}
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}
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/* 释放链表内存 */
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void freeLinklist(linkList *l) {
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Node *temp = l->head->next;
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while (temp != 0) {
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free(l->head);
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l->head = temp;
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temp = temp->next;
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}
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free(l->head);
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l->head = 0;
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free(l);
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}
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/* 链表构造函数 */
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linkList *newLinklist(Vertex *val) {
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linkList *newLinklist = (linkList *)malloc(sizeof(linkList));
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newLinklist->head = newNode();
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newLinklist->head->val = val;
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newLinklist->tail = newLinklist->head;
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newLinklist->head->next = 0;
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return newLinklist;
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}
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/* 基于邻接链表实现的无向图类结构 */
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struct graphAdjList {
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// 顶点列表
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Vertex **verticesList;
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// 顶点数量
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unsigned int size;
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// 当前容量
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unsigned int capacity;
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};
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typedef struct graphAdjList graphAdjList;
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/* 添加边 */
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void addEdge(graphAdjList *t, int i, int j) {
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// 越界检查
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if (i < 0 || j < 0 || i == j || i >= t->size || j >= t->size) {
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printf("Out of range in %s:%d\n", __FILE__, __LINE__);
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return;
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}
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// 查找待连接的节点
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Vertex *v1 = t->verticesList[i];
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Vertex *v2 = t->verticesList[j];
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// 连接节点
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pushBack(v1->linked, v2);
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pushBack(v2->linked, v1);
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}
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/* 删除边 */
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void removeEdge(graphAdjList *t, int i, int j) {
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// 越界检查
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if (i < 0 || j < 0 || i == j || i >= t->size || j >= t->size) {
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printf("Out of range in %s:%d\n", __FILE__, __LINE__);
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return;
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}
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// 查找待删除边的相关节点
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Vertex *v1 = t->verticesList[i];
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Vertex *v2 = t->verticesList[j];
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// 移除待删除边
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removeLink(v1->linked, v2);
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removeLink(v2->linked, v1);
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}
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/* 添加顶点 */
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void addVertex(graphAdjList *t, int val) {
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// 若大小超过容量，则扩容
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if (t->size >= t->capacity) {
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Vertex **tempList = (Vertex **)malloc(sizeof(Vertex *) * 2 * t->capacity);
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memcpy(tempList, t->verticesList, sizeof(Vertex *) * t->size);
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free(t->verticesList);
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// 指向新顶点表
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t->verticesList = tempList;
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t->capacity = t->capacity * 2;
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}
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// 申请新顶点内存并将新顶点地址存入顶点列表
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Vertex *newV = newVertex(val);
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newV->pos = t->size;
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newV->linked = newLinklist(newV);
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t->verticesList[t->size] = newV;
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t->size++;
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}
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/* 删除顶点 */
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void removeVertex(graphAdjList *t, unsigned int index) {
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// 越界检查
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if (index < 0 || index >= t->size) {
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printf("Out of range in %s:%d\n", __FILE__, __LINE__);
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exit(1);
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}
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// 查找待删节点
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Vertex *v = t->verticesList[index];
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// 若不存在该节点，则返回
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if (v == 0) {
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printf("index is:%d\n", index);
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printf("Out of range in %s:%d\n", __FILE__, __LINE__);
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return;
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}
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// 遍历待删除节点链表，将所有与待删除结点有关的边删除
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Node *temp = v->linked->head->next;
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while (temp != 0) {
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removeLink(temp->val->linked, v);
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temp = temp->next;
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}
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// 定点列表前移
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for (int i = index; i < t->size - 1; i++) {
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t->verticesList[i] = t->verticesList[i + 1];
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}
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t->verticesList[t->size - 1] = 0;
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t->size--;
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//释放被删除顶点的内存
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freeVertex(v);
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}
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/* 打印顶点与邻接矩阵 */
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void printGraph(graphAdjList *t) {
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printf("邻接表 =\n");
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for (int i = 0; i < t->size; i++) {
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Node *n = t->verticesList[i]->linked->head->next;
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printf("%d: [", t->verticesList[i]->val);
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while (n != 0) {
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if (n->next != 0) {
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printf("%d, ", n->val->val);
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} else {
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printf("%d", n->val->val);
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}
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n = n->next;
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}
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printf("]\n");
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}
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}
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/* 构造函数 */
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graphAdjList *newGraphic(unsigned int verticesNumber) {
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// 申请内存
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graphAdjList *newGraph = (graphAdjList *)malloc(sizeof(graphAdjList));
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// 建立顶点表并分配内存
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newGraph->verticesList = (Vertex **)malloc(sizeof(Vertex *) * verticesNumber);
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memset(newGraph->verticesList, 0, sizeof(Vertex *) * verticesNumber);
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// 初始化大小和容量
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newGraph->size = 0;
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newGraph->capacity = verticesNumber;
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return newGraph;
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}
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54
codes/c/chapter_graph/graph_adjacency_list_test.c
Normal file
54
codes/c/chapter_graph/graph_adjacency_list_test.c
Normal file
@ -0,0 +1,54 @@
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/**
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* File: graph_adjacency_list_test.c
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* Created Time: 2023-07-11
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* Author: NI-SW (947743645@qq.com)
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*/
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#include "graph_adjacency_list.c"
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/* Driver Code */
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int main() {
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/* 初始化无向图 */
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graphAdjList *graph = newGraphic(5);
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// 初始化顶点
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addVertex(graph, 1);
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addVertex(graph, 3);
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addVertex(graph, 2);
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addVertex(graph, 5);
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addVertex(graph, 4);
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// 初始化边
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addEdge(graph, 0, 1);
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addEdge(graph, 0, 3);
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addEdge(graph, 1, 2);
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addEdge(graph, 2, 3);
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addEdge(graph, 2, 4);
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addEdge(graph, 3, 4);
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printf("\n初始化后，图为:\n");
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printGraph(graph);
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/* 添加边 */
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// 顶点 1, 2 的索引分别为 0, 2
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addEdge(graph, 0, 2);
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printf("\n添加边 1-2 后图为\n");
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printGraph(graph);
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/* 删除边 */
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// 顶点 1, 3 的索引分别为 0, 1
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removeEdge(graph, 0, 1);
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printf("\n删除边 1-3 后，图为\n");
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printGraph(graph);
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/* 添加顶点 */
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addVertex(graph, 6);
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printf("\n添加顶点 6 后，图为\n");
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printGraph(graph);
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/* 删除顶点 */
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// 顶点 3 的索引为 1
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removeVertex(graph, 1);
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printf("\n删除顶点 3 后，图为\n");
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printGraph(graph);
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return 0;
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}
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238
codes/c/chapter_graph/graph_adjacency_matrix.c
Normal file
238
codes/c/chapter_graph/graph_adjacency_matrix.c
Normal file
@ -0,0 +1,238 @@
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/**
|
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* File: graph_adjacency_matrix.c
|
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* Created Time: 2023-07-06
|
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* Author: NI-SW (947743645@qq.com)
|
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*/
|
||||
|
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#include "../utils/common.h"
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|
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/* 基于邻接矩阵实现的无向图类结构 */
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struct graphAdjMat {
|
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int *vertices;
|
||||
unsigned int **adjMat;
|
||||
unsigned int size;
|
||||
unsigned int capacity;
|
||||
};
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typedef struct graphAdjMat graphAdjMat;
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|
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/* 添加边 */
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void addEdge(graphAdjMat *t, int i, int j) {
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||||
// 越界检查
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||||
if (i < 0 || j < 0 || i >= t->size || j >= t->size || i == j) {
|
||||
printf("Out of range in %s:%d\n", __FILE__, __LINE__);
|
||||
exit(1);
|
||||
}
|
||||
t->adjMat[i][j] = 1;
|
||||
t->adjMat[j][i] = 1;
|
||||
}
|
||||
|
||||
/* 删除边 */
|
||||
void removeEdge(graphAdjMat *t, int i, int j) {
|
||||
// 越界检查
|
||||
if (i < 0 || j < 0 || i >= t->size || j >= t->size || i == j) {
|
||||
printf("Out of range in %s:%d\n", __FILE__, __LINE__);
|
||||
exit(1);
|
||||
}
|
||||
t->adjMat[i][j] = 0;
|
||||
t->adjMat[j][i] = 0;
|
||||
}
|
||||
|
||||
/* 添加顶点 */
|
||||
void addVertex(graphAdjMat *t, int val) {
|
||||
// 如果实际使用不大于预设空间，则直接初始化新空间
|
||||
if (t->size < t->capacity) {
|
||||
t->vertices[t->size] = val;
|
||||
|
||||
// 邻接矩新列阵置0
|
||||
for (int i = 0; i < t->size; i++) {
|
||||
t->adjMat[i][t->size] = 0;
|
||||
}
|
||||
memset(t->adjMat[t->size], 0, sizeof(unsigned int) * (t->size + 1));
|
||||
t->size++;
|
||||
return;
|
||||
}
|
||||
|
||||
// 扩容，申请新的顶点数组
|
||||
int *temp = (int *)malloc(sizeof(int) * (t->size * 2));
|
||||
memcpy(temp, t->vertices, sizeof(int) * t->size);
|
||||
temp[t->size] = val;
|
||||
|
||||
// 释放原数组
|
||||
free(t->vertices);
|
||||
t->vertices = temp;
|
||||
|
||||
// 扩容，申请新的二维数组
|
||||
unsigned int **tempMat = (unsigned int **)malloc(sizeof(unsigned int *) * t->size * 2);
|
||||
unsigned int *tempMatLine = (unsigned int *)malloc(sizeof(unsigned int) * (t->size * 2) * (t->size * 2));
|
||||
memset(tempMatLine, 0, sizeof(unsigned int) * (t->size * 2) * (t->size * 2));
|
||||
for (int k = 0; k < t->size * 2; k++) {
|
||||
tempMat[k] = tempMatLine + k * (t->size * 2);
|
||||
}
|
||||
|
||||
// 原数据复制到新数组
|
||||
for (int i = 0; i < t->size; i++) {
|
||||
memcpy(tempMat[i], t->adjMat[i], sizeof(unsigned int) * t->size);
|
||||
}
|
||||
|
||||
// 新列置0
|
||||
for (int i = 0; i < t->size; i++) {
|
||||
tempMat[i][t->size] = 0;
|
||||
}
|
||||
memset(tempMat[t->size], 0, sizeof(unsigned int) * (t->size + 1));
|
||||
|
||||
// 释放原数组
|
||||
free(t->adjMat[0]);
|
||||
free(t->adjMat);
|
||||
|
||||
// 扩容后，指向新地址
|
||||
t->adjMat = tempMat;
|
||||
t->capacity = t->size * 2;
|
||||
t->size++;
|
||||
}
|
||||
|
||||
/* 删除顶点 */
|
||||
void removeVertex(graphAdjMat *t, unsigned int index) {
|
||||
// 越界检查
|
||||
if (index < 0 || index >= t->size) {
|
||||
printf("Out of range in %s:%d\n", __FILE__, __LINE__);
|
||||
exit(1);
|
||||
}
|
||||
|
||||
// 清除删除的顶点，并将其后所有顶点前移
|
||||
for (int i = index; i < t->size - 1; i++) {
|
||||
t->vertices[i] = t->vertices[i + 1];
|
||||
}
|
||||
|
||||
// 将被前移的最后一个顶点置0
|
||||
t->vertices[t->size - 1] = 0;
|
||||
|
||||
// 清除邻接矩阵中删除的列
|
||||
for (int i = 0; i < t->size - 1; i++) {
|
||||
if (i < index) {
|
||||
// 被删除列后的所有列前移
|
||||
for (int j = index; j < t->size - 1; j++) {
|
||||
t->adjMat[i][j] = t->adjMat[i][j + 1];
|
||||
}
|
||||
} else {
|
||||
// 被删除行的下方所有行上移
|
||||
memcpy(t->adjMat[i], t->adjMat[i + 1], sizeof(unsigned int) * t->size);
|
||||
// 被删除列后的所有列前移
|
||||
for (int j = index; j < t->size; j++) {
|
||||
t->adjMat[i][j] = t->adjMat[i][j + 1];
|
||||
}
|
||||
}
|
||||
}
|
||||
t->size--;
|
||||
}
|
||||
|
||||
/* 打印顶点与邻接矩阵 */
|
||||
void printGraph(graphAdjMat *t) {
|
||||
if (t->size == 0) {
|
||||
printf("graph is empty\n");
|
||||
return;
|
||||
}
|
||||
printf("顶点列表 = [");
|
||||
for (int i = 0; i < t->size; i++) {
|
||||
if (i != t->size - 1) {
|
||||
printf("%d, ", t->vertices[i]);
|
||||
} else {
|
||||
printf("%d", t->vertices[i]);
|
||||
}
|
||||
}
|
||||
printf("]\n");
|
||||
printf("邻接矩阵 =\n[\n");
|
||||
for (int i = 0; i < t->size; i++) {
|
||||
printf(" [");
|
||||
for (int j = 0; j < t->size; j++) {
|
||||
if (j != t->size - 1) {
|
||||
printf("%u, ", t->adjMat[i][j]);
|
||||
} else {
|
||||
printf("%u", t->adjMat[i][j]);
|
||||
}
|
||||
}
|
||||
printf("],\n");
|
||||
}
|
||||
printf("]\n");
|
||||
}
|
||||
|
||||
/* 构造函数 */
|
||||
graphAdjMat *newGraphic(unsigned int numberVertices, int *vertices, unsigned int **adjMat) {
|
||||
// 函数指针
|
||||
graphAdjMat *newGraph = (graphAdjMat *)malloc(sizeof(graphAdjMat));
|
||||
|
||||
// 申请内存
|
||||
newGraph->vertices = (int *)malloc(sizeof(int) * numberVertices * 2);
|
||||
newGraph->adjMat = (unsigned int **)malloc(sizeof(unsigned int *) * numberVertices * 2);
|
||||
unsigned int *temp = (unsigned int *)malloc(sizeof(unsigned int) * numberVertices * 2 * numberVertices * 2);
|
||||
newGraph->size = numberVertices;
|
||||
newGraph->capacity = numberVertices * 2;
|
||||
|
||||
// 配置二维数组
|
||||
for (int i = 0; i < numberVertices * 2; i++) {
|
||||
newGraph->adjMat[i] = temp + i * numberVertices * 2;
|
||||
}
|
||||
|
||||
// 赋值
|
||||
memcpy(newGraph->vertices, vertices, sizeof(int) * numberVertices);
|
||||
for (int i = 0; i < numberVertices; i++) {
|
||||
memcpy(newGraph->adjMat[i], adjMat[i], sizeof(unsigned int) * numberVertices);
|
||||
}
|
||||
|
||||
return newGraph;
|
||||
}
|
||||
|
||||
/* Driver Code */
|
||||
int main() {
|
||||
|
||||
/* 初始化无向图 */
|
||||
int vertices[5] = {1, 3, 2, 5, 4};
|
||||
unsigned int **edge = (unsigned int **)malloc(sizeof(unsigned int *) * 5);
|
||||
|
||||
// 用于构建二维数组的一维指针
|
||||
unsigned int *temp = (unsigned int *)malloc(sizeof(unsigned int) * 25);
|
||||
memset(temp, 0, sizeof(unsigned int) * 25);
|
||||
for (int k = 0; k < 5; k++) {
|
||||
edge[k] = temp + k * 5;
|
||||
}
|
||||
|
||||
// 初始化边
|
||||
edge[0][1] = edge[1][0] = 1;
|
||||
edge[0][3] = edge[3][0] = 1;
|
||||
edge[1][2] = edge[2][1] = 1;
|
||||
edge[2][3] = edge[3][2] = 1;
|
||||
edge[2][4] = edge[4][2] = 1;
|
||||
edge[3][4] = edge[4][3] = 1;
|
||||
|
||||
// 建立无向图
|
||||
graphAdjMat *graph = newGraphic(5, vertices, edge);
|
||||
free(edge);
|
||||
free(temp);
|
||||
printf("\n初始化后，图为:\n");
|
||||
printGraph(graph);
|
||||
|
||||
/* 添加边 */
|
||||
// 顶点 1, 2 的索引分别为 0, 2
|
||||
addEdge(graph, 0, 2);
|
||||
printf("\n添加边 1-2 后图为\n");
|
||||
printGraph(graph);
|
||||
|
||||
/* 删除边 */
|
||||
// 顶点 1, 3 的索引分别为 0, 1
|
||||
removeEdge(graph, 0, 1);
|
||||
printf("\n删除边 1-3 后，图为\n");
|
||||
printGraph(graph);
|
||||
|
||||
/* 添加顶点 */
|
||||
addVertex(graph, 6);
|
||||
printf("\n添加顶点 6 后，图为\n");
|
||||
printGraph(graph);
|
||||
|
||||
/* 删除顶点 */
|
||||
// 顶点 3 的索引为 1
|
||||
removeVertex(graph, 1);
|
||||
printf("\n删除顶点 3 后，图为\n");
|
||||
printGraph(graph);
|
||||
|
||||
return 0;
|
||||
}
|
||||
157
codes/c/chapter_graph/graph_bfs
Normal file
157
codes/c/chapter_graph/graph_bfs
Normal file
@ -0,0 +1,157 @@
|
||||
/**
|
||||
* File: graph_bfs.c
|
||||
* Created Time: 2023-07-11
|
||||
* Author: NI-SW (947743645@qq.com)
|
||||
*/
|
||||
|
||||
#include "graph_adjacency_list.c"
|
||||
|
||||
/* 哈希表 */
|
||||
struct hashTable {
|
||||
unsigned int size;
|
||||
unsigned int *array;
|
||||
};
|
||||
|
||||
typedef struct hashTable hashTable;
|
||||
|
||||
/* 初始化哈希表 */
|
||||
hashTable *newHash(unsigned int size) {
|
||||
hashTable *h = (hashTable *)malloc(sizeof(hashTable));
|
||||
h->array = (unsigned int *)malloc(sizeof(unsigned int) * size);
|
||||
memset(h->array, 0, sizeof(unsigned int) * size);
|
||||
h->size = size;
|
||||
return h;
|
||||
}
|
||||
|
||||
/* 标记索引过的顶点 */
|
||||
void hashMark(hashTable *h, int index) {
|
||||
h->array[index % h->size] = 1;
|
||||
}
|
||||
|
||||
/* 查询顶点是否已被标记 */
|
||||
int hashQuery(hashTable *h, int index) {
|
||||
// 若顶点已被标记，则返回 0
|
||||
if (h->array[index % h->size] == 1) {
|
||||
return 0;
|
||||
} else {
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
/* 释放哈希表内存 */
|
||||
void freeHash(hashTable *h) {
|
||||
free(h->array);
|
||||
free(h);
|
||||
}
|
||||
|
||||
/* 队列 */
|
||||
struct queue {
|
||||
Vertex **list;
|
||||
unsigned int size;
|
||||
int head;
|
||||
int tail;
|
||||
};
|
||||
|
||||
typedef struct queue queue;
|
||||
|
||||
/* 初始化队列 */
|
||||
queue *newQueue(unsigned int size) {
|
||||
queue *q = (queue *)malloc(sizeof(queue));
|
||||
q->size = size;
|
||||
q->list = (Vertex **)malloc(sizeof(Vertex *) * size);
|
||||
q->head = 0;
|
||||
q->tail = 0;
|
||||
|
||||
return q;
|
||||
}
|
||||
|
||||
/* 入队 */
|
||||
void queuePush(queue *q, Vertex *v) {
|
||||
q->list[q->tail] = v;
|
||||
q->tail++;
|
||||
}
|
||||
|
||||
/* 出队 */
|
||||
void queuePop(queue *q) {
|
||||
q->head++;
|
||||
}
|
||||
|
||||
/* 队首元素 */
|
||||
Vertex *queueTop(queue *q) {
|
||||
return q->list[q->head];
|
||||
}
|
||||
|
||||
/* 释放队列内存 */
|
||||
void freeQueue(queue *q) {
|
||||
free(q->list);
|
||||
free(q);
|
||||
}
|
||||
|
||||
/* 广度优先遍历 */
|
||||
void graphBFS(graphAdjList *t) {
|
||||
// 初始化队列与哈希表
|
||||
queue *que = newQueue(t->size);
|
||||
hashTable *visited = newHash(t->size);
|
||||
// 将第一个元素入队
|
||||
queuePush(que, t->verticesList[0]);
|
||||
hashMark(visited, t->verticesList[0]->pos);
|
||||
|
||||
printf("\n[");
|
||||
while (que->head < que->tail) {
|
||||
// 遍历该顶点的边链表，将所有与该顶点有连接的，并且未被标记的顶点入队
|
||||
Node *n = queueTop(que)->linked->head->next;
|
||||
while (n != 0) {
|
||||
// 查询哈希表，若该索引的顶点已入队，则跳过，否则入队并标记
|
||||
if (hashQuery(visited, n->val->pos) != 0) {
|
||||
queuePush(que, n->val);
|
||||
hashMark(visited, n->val->pos);
|
||||
}
|
||||
n = n->next;
|
||||
}
|
||||
// 打印队首元素
|
||||
if (que->head == que->tail - 1) {
|
||||
printf("%d]\n", queueTop(que)->val);
|
||||
} else {
|
||||
printf("%d, ", queueTop(que)->val);
|
||||
}
|
||||
// 队首元素出队
|
||||
queuePop(que);
|
||||
}
|
||||
printf("\n");
|
||||
|
||||
// 释放队列与哈希表内存
|
||||
freeQueue(que);
|
||||
freeHash(visited);
|
||||
}
|
||||
|
||||
int main() {
|
||||
|
||||
/* 初始化无向图 */
|
||||
graphAdjList *graph = newGraphic(3);
|
||||
// 初始化顶点
|
||||
for (int i = 0; i < 10; i++) {
|
||||
addVertex(graph, i);
|
||||
}
|
||||
// 初始化边
|
||||
addEdge(graph, 0, 1);
|
||||
addEdge(graph, 0, 3);
|
||||
addEdge(graph, 1, 2);
|
||||
addEdge(graph, 1, 4);
|
||||
addEdge(graph, 2, 5);
|
||||
addEdge(graph, 3, 4);
|
||||
addEdge(graph, 3, 6);
|
||||
addEdge(graph, 4, 5);
|
||||
addEdge(graph, 4, 7);
|
||||
addEdge(graph, 5, 8);
|
||||
addEdge(graph, 6, 7);
|
||||
addEdge(graph, 7, 8);
|
||||
|
||||
printf("\n初始化后，图为:\n");
|
||||
printGraph(graph);
|
||||
|
||||
printf("\n广度优先遍历（BFS）顶点序列为");
|
||||
graphBFS(graph);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user