View Code of Problem 92

#include<stdio.h>
#include<stdlib.h>
#include<iostream>
#include<math.h>
using namespace std;
const int maxn=10010;
int prime[maxn];
bool p[maxn];
int pNum=0;
void Find_Prime()
{
	for(int i=2;i<maxn;i++)
	{
		if(p[i]==false)
		{
			prime[pNum++]=i;
			for(int j=i+i;j<maxn;j+=i)
			{
				p[j]=true;
			}
		}
	}
}

int  isHuiWen(int n)
{
	int b=n;
	int a;
	int sum=0;
	int len=(int)log10(n)+1;
	int c=len;
//	printf("%d",len);
	//取末尾再组装
	for(int i=0;i<c;i++)
	{
		a=n%10;
		sum+=a*pow(10,len-1);
		len--;
		n=n/10;
		//printf("a=%d,n=%d\n",a,n);
	}
	//printf("%d\n",sum);
	if(sum==b)
		return 1;
	else
		return 0;
}
		
int main()
{
	p[0]=true;
	p[1]=true;
	Find_Prime();

	int a,b;
	cin>>a>>b;
	int count=0;
	for(int i=a;i<=b;i++)
	{
		if(p[i]==false&&isHuiWen(i))
		{
			count++;
			printf("%6d",i);
				if((count)%5==0) 
		printf("\n");
		}	
	
	}

	system("pause");
	
}

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