用压栈的方法实现回文数

朱雀 2022-07-14 00:56 109阅读 0赞

#include<stdio.h>
    #include<stdlib.h>
    #include<malloc.h>
    #define OVERFLOW -2
    #define OK 1
    #define ERROR 0
    #define MAXSIZE 100
    typedef int status;
    typedef char SElemType;
    typedef char QElemType;
    typedef struct
    {
    	SElemType *base;
    	SElemType *top;
    	int stacksize;
    }Sqstack;
    typedef struct
    {
    	QElemType *base;
    	char front;
    	char rear;
    }SqQueue;
    status Initstack(Sqstack *S)
    {
    	S->base=(SElemType*)malloc(MAXSIZE*sizeof(SElemType));
    	if(!S->base) exit(OVERFLOW);
    	S->top=S->base;
    	S->stacksize=MAXSIZE;
    	return OK;
    }
    status Emtypestack(Sqstack *S)
    {
    	if(S->top==S->base)
    		return OK;
    	else
    		return ERROR;
    }
    status InitQueue(SqQueue *Q)
    {
    	Q->base=(QElemType *)malloc(MAXSIZE*sizeof(QElemType));
    	if(!Q->base) exit(OVERFLOW);
    	Q->front=Q->rear=0;
    	return OK;
    }
    status Push(Sqstack *S,SElemType x)
    {
    	if(S->top-S->base>=S->stacksize)
    	{
    		S->base=(SElemType *)realloc(S->base,(S->stacksize+MAXSIZE)*sizeof(SElemType));
    		if(!S->base) exit(OVERFLOW);
    	    S->top=S->base+S->stacksize;
    		S->stacksize+=MAXSIZE;
    	}
    	*S->top=x;
    	S->top--;
    	return OK;
    }
    status Pop(Sqstack *S,SElemType *x)
    {
    	if(S->top==S->base)
    		return ERROR;
    	else
    	{
    		S->top--;
    		*x=*S->top;
    		return OK;
    	}
    }
    status EnQueue(SqQueue *Q,QElemType y)
    {
    	if((Q->rear+1)%MAXSIZE==Q->front)
    		return ERROR;
    	Q->base[Q->rear]=y;
    	Q->rear=(Q->rear+1)%MAXSIZE;
    	return OK;
    }
    status DeQueue(SqQueue *Q,QElemType *y)
    {
    	if(Q->front=Q->rear)
    		return ERROR;
    	*y=Q->base[Q->front];
    	Q->front=(Q->front+1)%MAXSIZE;
    	return OK;
    }
    status ReturnText(Sqstack *S,SqQueue *Q,char *C)
    {
    	QElemType y;
    	SElemType x;
    	Initstack(S);//鍒濆鍖朣
    	InitQueue(Q);//鍒濆鍖朡
    	*C=getchar();
    	while((*C)!='@')
    	{
    		Push(S,*C);//鍏ユ爤
    		EnQueue(Q,*C);//鍏ラ槦
    		*C=getchar();
    	}
    	while(!Emtypestack(S))//鏍堜笉涓虹┖
    	{
    		Pop(S,&x);//鍑烘爤
    		DeQueue(Q,&y);//鍑洪槦
    		if(x!=y)//鍒ゆ柇
    		{
               printf("涓嶆槸鍥炴枃鏁癨n");
              break;
    		}
    		else
    		{
    			printf("鏄洖鏂囨暟\n");
    		    break;
    		}
    	}
    	return OK;
    }
    int main(void)
    {
    	SqQueue Q;
    	Sqstack S;
    	QElemType y;
    	SElemType x;
    	char C;
    	scanf("%c",&C);
    	ReturnText(&S,&Q,&C);
    	return OK;
    }