//栈的链式存储结构
typedef struct node{
DataType data;
struct node *next;
}LStackNode,*LinkStack;
//初始化链栈
void InitStack(LinkStack *top){
if((*top=(LinkStack)malloc(sizeof(LStackNode)))==NULL)
exit(-1);
(*top)->next=NULL;
}
//判读链栈是否为空
int StackEmpty(LinkStack top){
if(top->next==NULL)
return 1;
else
return 0;
}
//将元素e入栈
int PushStack(LinkStack top,DataType e){
LStackNode *p;
if((p=(LStackNode*)malloc(sizeof(LStackNode)))==NULL){
printf("内存分配失败!");
exit(-1);
}
p->data=e;
p->next=top->next;
top->next=p;
return 1;
}
//将栈顶元素出栈
int PopStack(LinkStack top,DataType *e){
LStackNode *p;
p=top->next;
if(!p){
printf("栈已空!");
return 0;
}
top->next=p->next;
*e=p->data;
free(p);
return 1;
}
//取栈顶元素
int GetTop(LinkStack top,DataType *e){
LstackNode *p;
p=top->next;
if(!p){
printf("栈已空!");
return 0;
}
*e=p->data;
return 1;
}
//求栈的长度
int StackLength(LinkStack top){
LStackNode *p;
int count=0;
p=top;
while(p->next!=NULl){
p=p->next;
count++;
}
return count;
}
//销毁链栈
void DestroyStack(LinkStack top){
LStackNode *p;
p=top;
while(!p){
q=p;
p=p->next;
free(q);
}
}
数据结构之栈(二)
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转载自blog.csdn.net/weixin_40431584/article/details/88648213
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