链串

        链串的组织形式和一般的链表类似，主要的区别在于：链串中一个结点可以存储多个字符。通常将链串中结点存储的字符个数称为结点大小。

#include<iostream>
using namespace std;

typedef struct snode
{
	char data;
	struct snode *next;
}LiString;

void StrAssign(LiString * &s,char cstr[] )
{
	int i;
	LiString *r,*p;
	s=(LiString *)malloc (sizeof(LiString));
	r=s;
	for(i=0;cstr[i]!='0';i++)
	{
		p=(LiString *)malloc (sizeof(LiString));
		p->data=cstr[i];
		r->next=p;
		r=p;
	}
	r->next=NULL;
}

void strCopy(LiString *&s,LiString *t)
{
	LiString *p=t->next,*q,*r;
	s=(LiString *)malloc (sizeof(LiString));
	r=s;
	while(p!=NULL)
	{
		q->data=p->data;
		r->next=q;
		r=q;
		p=p->next;
	}
	r->next=NULL;
}

int StrEqual(LiString *s,LiString *t)
{
	LiString *p=s->next,*q=t->next;
	while(p!=NULL&&q!=NULL&&p->data==q->data)
	{
		p=p->next;
		q=q->next;
	}
	if(p==NULL&&q==NULL)
		return 1;
	else
		return 0;
}

int StrLength(LiString *s)
{
	int i=0;
	LiString *p=s->next;
	while(p!=NULL)
	{
		i++;
		p=p->next;
	}
	return i;
}

LiString *COncat(LiString *s,LiString *t)
{
	LiString *str,*p=s->next,*q,*r;
	str=(LiString *)malloc (sizeof(LiString));
	r=str;
	while(p!=NULL)
	{
		q=(LiString *)malloc (sizeof(LiString));
		q->data=p->data;
		r->next=q;
		r=q;
		p=p->next;
	}
	p=t->next;
	while(p=NULL)
	{
		q=(LiString *)malloc (sizeof(LiString));
		q->data=p->data;
		r->next=q;
		r=q;
		p=p->next;
	}
	r->next=NULL;
	return str;

}

LiString *SubStr(LiString *s,int i,int j)
{
	int k;
	LiString *str,*p=s->next,*q,*r;
	str=(LiString *)malloc (sizeof(LiString));;
	str->next=NULL;    //去掉这句有没有影响
	r=str;
	if(i<=0||i>StrLength(s)||j<0||i+j-1>StrLength(s))
		return str;
	for(k=0;k<i-1;k++)
		p=p->next;
	for(k=1;k<=j;k++)
	{
		q=(LiString *)malloc (sizeof(LiString));
		q->data=p->data;
		r->next=q;
		r=q;
		p=p->next;
	}
	r->next=NULL;
	return str;
}

LiString *InsStr(LiString *s,int i,LiString *t)
{
	int k;
	LiString *str,*p=s->next,*p1=t->next,*q,*r;
	str=(LiString *)malloc (sizeof(LiString));
	str->next=NULL;
	r=str;
	if(i<=0||i>StrLength(s)+1)
		return str;
	for(k=1;k<i;k++)
	{
		q=(LiString *)malloc (sizeof(LiString));
		q->data=p->data;
		r->next=q;
		r=q;
		p=p->next;
	}
	while(p1!=NULL)
	{
		q=(LiString *)malloc (sizeof(LiString));;
		q->data=p1->data;
		r->next=q;
		r=q;
		p1=p1->next;
	}
	while(p!=NULL)
	{
		q=(LiString *)malloc (sizeof(LiString));
		q->data=p->data;
		r->next=q;
		r=q;
		p1=p1->next;
	}
	r->next=NULL;
	return str;
}

LiString *DelStr(LiString *s,int i,int j)
{
	LiString *str,*p=s->next,*q,*r;
	str=(LiString *)malloc (sizeof(LiString));
	r=str;
	int k;
	if(i<0||i>StrLength(s)||j<0||i+j-1>StrLength(s))
		return str;
	for(k=0;k<i-1;k++)
	{
		q=(LiString *)malloc (sizeof(LiString));;
		q->data=p->data;
		r->next=q;
		r=q;
		p=p->next;
	}
	for(k==0;k<j;k++)
		p=p->next;
	while(p!=NULL)
	{
		q=(LiString *)malloc (sizeof(LiString));;
		q->data=p->data;
		r->next=q;
		r=q;
		p=p->next;
	}
	r->next=NULL;
	return str;
}

LiString *RepStr(LiString *s,int i,int j,LiString *t)
{
	int k;
	LiString *str,*p=s->next,*p1=t->next,*q,*r;
	r=str;
	if(i<0||i>StrLength(s)||j<0||i+j-1>StrLength(s))
		return str;
	for(k=0;k<i;k++)
	{
		q=(LiString *)malloc (sizeof(LiString));
		q->data=p->data;
		r->next=q;
		r=q;
		p=p->next;
	}
	for(k=0;k<j;k++)
		p=p->next;
	while(p1!=NULL)
	{
		q=(LiString *)malloc (sizeof(LiString));
		q->data=p1->data;
		r->next=q;
		r=q;
		p1=p1->next;
	}
	while(p!=NULL)
	{
		q=(LiString *)malloc (sizeof(LiString));
		q->data=p->data;
		r->next=q;
		r=q;
		p=p->next;
	}
	r->next=NULL;
	return str;
}

void DispStr(LiString *s)
{
	LiString *p=s->next;
	while(p!=NULL)
	{
		printf("%c",p->data);
		p=p->next;
	}
	printf("
");
}