void InitSpace(component* L) { for (int i = 0; i < MAXSIZE - 1; i++) L[i].cur = i + 1; L[MAXSIZE - 1].cur = 0; }这串代码是什么意思
时间: 2024-03-29 19:41:54 浏览: 17
这段代码是用来初始化一个静态链表的空间的。其中,静态链表是用数组来实现的,每个数组元素称为一个节点,每个节点中有两个元素:数据域和游标。游标指向下一个节点的下标。
函数的实现思路是:将数组中的所有节点都初始化为空闲状态,即将它们的游标设置为它们在数组中的下一个位置的下标。最后一个节点的游标指向 0,表示链表的结束。
具体地说,这个函数遍历数组中的每个节点,将它们的游标设置为它们在数组中的下一个位置的下标。最后一个节点的游标设置为 0。这样,整个数组就被初始化为空闲状态,可以用来存储静态链表的数据了。
相关问题
#include <stdio.h> #include <stdlib.h> #define maxsize 10 int visited[maxsize]={0}; typedef char datatype; typedef struct { datatype vertex[maxsize]; int edge[maxsize][maxsize]; int vertexnum,edgenum; }mgraph; void creatgraph(mgraph *G,datatype a[],int n,int e) { int i,j,k; G->vertexnum=n; G->edgenum=e; for(i=0;i<G->vertexnum;i++) G->vertex[i]=a[i]; for(i=0;i<G->vertexnum;i++) { for(j=0;j<G->vertexnum;j++) G->edge[i][j]=0; } for(k=0;k<G->edgenum;k++) { scanf("%d%d",&i,&j); G->edge[i][j]=1; G->edge[j][i]=1; } } void dfraverse(mgraph *G,int v) { printf("%c",G->vertex[v]); visited[v]=1; int j=0; for(j=0;j<G->vertexnum;j++) { if(G->edge[v][j]==1&&visited[j]==0) dfraverse(G,j); } } void bftraverse(mgraph *G,int v) { int i,j,Q[maxsize]; int front=-1; int rear=-1; printf("%c",G->vertex[v]); visited[v]=1; Q[++rear]=v; while(front!=rear) { i=Q[++front]; for(j=0;j<G->vertexnum;j++) { if(G->edge[i][j]==1&&visited[j]==0) { printf("%c",G->vertex[j]); visited[j]=1; Q[++rear]=j; } } } } int main () { int i; char ch[]={'A','B','C','D','E'}; mgraph MG; creatgraph(&MG,ch,5,6); for(i=0;i<maxsize;i++) visited[i]=0; dfraverse(&MG,0); for(i=0;i<maxsize;i++) visited[i]=0; bftraverse(&MG,0); return 0; }
这段代码的问题不大,可能是由于代码格式问题导致看起来不太清晰。如果需要改进,可以尝试对代码进行一些注释,以便更好地理解代码的功能和实现方式。以下是一些注释的示例:
```c
#include <stdio.h>
#include <stdlib.h>
#define maxsize 10
int visited[maxsize]={0}; //定义一个全局数组,表示节点是否被访问过
typedef char datatype;
typedef struct {
datatype vertex[maxsize]; //存储节点名称的数组
int edge[maxsize][maxsize]; //邻接矩阵
int vertexnum,edgenum; //节点数目和边数目
}mgraph;
void creatgraph(mgraph *G,datatype a[],int n,int e) {
int i,j,k;
G->vertexnum=n;
G->edgenum=e;
for(i=0;i<G->vertexnum;i++)
G->vertex[i]=a[i]; //初始化节点名称
for(i=0;i<G->vertexnum;i++)
{
for(j=0;j<G->vertexnum;j++)
G->edge[i][j]=0; //初始化邻接矩阵
}
for(k=0;k<G->edgenum;k++)
{
int i,j;
scanf("%d%d",&i,&j);
G->edge[i][j]=1;
G->edge[j][i]=1; //读入节点之间的关系,构建邻接矩阵
}
}
void dfraverse(mgraph *G,int v) {
printf("%c",G->vertex[v]); //输出当前遍历的节点名称
visited[v]=1; //标记该节点已被访问
int j=0;
for(j=0;j<G->vertexnum;j++)
{
if(G->edge[v][j]==1&&visited[j]==0)
dfraverse(G,j); //递归遍历与当前节点相邻的未被访问的节点
}
}
void bftraverse(mgraph *G,int v) {
int i,j,Q[maxsize];
int front=-1;
int rear=-1;
printf("%c",G->vertex[v]); //输出当前遍历的节点名称
visited[v]=1; //标记该节点已被访问
Q[++rear]=v;
while(front!=rear)
{
i=Q[++front];
for(j=0;j<G->vertexnum;j++)
{
if(G->edge[i][j]==1&&visited[j]==0)
{
printf("%c",G->vertex[j]); //输出当前遍历的节点名称
visited[j]=1; //标记该节点已被访问
Q[++rear]=j;
}
}
}
}
int main () {
int i;
char ch[]={'A','B','C','D','E'};
mgraph MG;
creatgraph(&MG,ch,5,6); //创建图
for(i=0;i<maxsize;i++)
visited[i]=0; //初始化visited数组
dfraverse(&MG,0); //深度优先遍历
for(i=0;i<maxsize;i++)
visited[i]=0; //初始化visited数组
bftraverse(&MG,0); //广度优先遍历
return 0;
}
```
#include<stdio.h> #include<stdlib.h> Typedef struct Graph{ Char* vexs; Int** arcs; Int vexnum,arcnum; )Graph; Graph* initGraph(int vexnum){ Graph* G=(Graph*)malloc(sizeof(Graph)) G->vexs=(char*)malloc(sizeof (char)*vexnum) G->arcs=(int**)malloc(sizeof (int*)*vexnum) For(int i=0;i<vexnum;I++) { G->arcs[i]= (int*)malloc(sizeof (int)*vexnum)} G->vexnum=Vexnum; G->arcnum=0; Return G } Int createGraph(Graph* G,char* vexs,int* arcs) {for(i=0;i<G->vexnum;i++) G->vexs[i]=vexs[i]; For((j=0;j<G->vexnum;j++) G->arcs[i][j]=*(arcs+i*vexnum+j ) If(G->arcs[i][j]!=0) G->arcnum++; } G->arcnum/=2; } Void DFS(Graph* G,int *visit,int index){ Printf("%c",G->vexs[index]) Visit[index]=1; For(int i=0;i<G->vexnum;i++) If(G->arcs[index][i]==1&&visit[index]!=1) DFS(G,visit,i) } Void BFS(Graph* G,int *visit ,int index){ Printf("%c",&G->vexs[index]) Visit[index]=1; Queue* initQueue(); enQueue(Q,index); while(!isEmpty(Q)) int i=deQueue(); For(int j=0;j<G->vexnum;J++) If(G->arcs[i][j]==1&&!visit[j]) Printf("%c",G->vexs[j]) Visit[j]=1; enQueue(Q,j);} } #define MAXSIZE 5 Typedef struct Queue{ Int front Int rear Int data[MAXSIZE] }Queue; Queue* Q InitQueue() { Queue* Q=(Queue*)malloc(sizeof(QUeue)); Queue->front=Queue->rear=0; Return Q; } Int enQueue(Queue* Q, int data) If (isFull(Q)){ Return 0} Else Q->data[Q->rear]=data; Q->rear=(Q->rear+1)%MAXSIZE } Int deQueue(Queue* Q) If (isempty(Q)){ Return 0} Else Int data=Q->data[Q->front]; Q->front=(Q->front+1)%MAXSIZE Return data; } Void printfQueue(Queue* Q){ Int length=(Q->rea-Q->front+MAXSIZE)%MAXSIZE For(int i=0;i<length;i++) Printf("%d->",Q->data[Q->front]) Q->front=(Q->front+1)%MAXSIZE; Int main(){ Graph* G=initGraph(5); Int arcs[5][5]={ 0,1,1,1,0, 0,1,1,1,0, 0,1,1,1,0, 0,1,1,1,0, 0,1,1,1,0, }; CreateGraph(*G,"ABCDE",(int*)arcs); Int* visit=(int*)malloc(sizeof(int)*G->vexnum); For(int i=0;i<G->vexnum;i++) Visit[i]=0; DFS(G,visit,0); BFS(G,visit,0) }修改正确并转化为c语言代码
抱歉,您提供的代码已经是C语言代码。不过,代码中存在一些拼写错误和语法错误,我给您修正一下:
```
#include <stdio.h>
#include <stdlib.h>
#define MAXSIZE 5
typedef struct Graph{
char* vexs;
int** arcs;
int vexnum, arcnum;
}Graph;
Graph* initGraph(int vexnum) {
Graph* G = (Graph*)malloc(sizeof(Graph));
G->vexs = (char*)malloc(sizeof(char) * vexnum);
G->arcs = (int**)malloc(sizeof(int*) * vexnum);
for(int i = 0; i < vexnum; i++) {
G->arcs[i] = (int*)malloc(sizeof(int) * vexnum);
}
G->vexnum = vexnum;
G->arcnum = 0;
return G;
}
int createGraph(Graph* G, char* vexs, int* arcs) {
for(int i = 0; i < G->vexnum; i++) {
G->vexs[i] = vexs[i];
for(int j = 0; j < G->vexnum; j++) {
G->arcs[i][j] = *(arcs + i * G->vexnum + j);
if(G->arcs[i][j] != 0) {
G->arcnum++;
}
}
}
G->arcnum /= 2;
}
typedef struct Queue{
int front;
int rear;
int data[MAXSIZE];
}Queue;
Queue* initQueue() {
Queue* Q = (Queue*)malloc(sizeof(Queue));
Q->front = Q->rear = 0;
return Q;
}
int isFull(Queue* Q) {
if((Q->rear + 1) % MAXSIZE == Q->front) {
return 1;
} else {
return 0;
}
}
int isEmpty(Queue* Q) {
if(Q->front == Q->rear) {
return 1;
} else {
return 0;
}
}
int enQueue(Queue* Q, int data) {
if(isFull(Q)) {
return 0;
} else {
Q->data[Q->rear] = data;
Q->rear = (Q->rear + 1) % MAXSIZE;
return 1;
}
}
int deQueue(Queue* Q) {
if(isEmpty(Q)) {
return 0;
} else {
int data = Q->data[Q->front];
Q->front = (Q->front + 1) % MAXSIZE;
return data;
}
}
void printfQueue(Queue* Q) {
int length = (Q->rear - Q->front + MAXSIZE) % MAXSIZE;
for(int i = 0; i < length; i++) {
printf("%d->", Q->data[Q->front]);
Q->front = (Q->front + 1) % MAXSIZE;
}
}
void DFS(Graph* G, int* visit, int index){
printf("%c", G->vexs[index]);
visit[index] = 1;
for(int i = 0; i < G->vexnum; i++) {
if(G->arcs[index][i] == 1 && visit[i] != 1) {
DFS(G, visit, i);
}
}
}
void BFS(Graph* G, int* visit ,int index) {
printf("%c", G->vexs[index]);
visit[index] = 1;
Queue* Q = initQueue();
enQueue(Q, index);
while(!isEmpty(Q)) {
int i = deQueue(Q);
for(int j = 0; j < G->vexnum; j++) {
if(G->arcs[i][j] == 1 && !visit[j]) {
printf("%c", G->vexs[j]);
visit[j] = 1;
enQueue(Q, j);
}
}
}
}
int main() {
Graph* G = initGraph(5);
int arcs[5][5] = {
{0, 1, 1, 1, 0},
{0, 1, 1, 1, 0},
{0, 1, 1, 1, 0},
{0, 1, 1, 1, 0},
{0, 1, 1, 1, 0}
};
createGraph(G, "ABCDE", (int*)arcs);
int* visit = (int*)malloc(sizeof(int) * G->vexnum);
for(int i = 0; i < G->vexnum; i++) {
visit[i] = 0;
}
DFS(G, visit, 0);
printf("\n");
for(int i = 0; i < G->vexnum; i++) {
visit[i] = 0;
}
BFS(G, visit, 0);
printf("\n");
return 0;
}
```