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1350 runtime error,thanks

Posted by magipan at 2009-03-05 20:29:33
#include <stdio.h> 
int max_min(int a)
{
	int i,j,n=0;
	int arr[4],temp;
	while(a)
	{
		arr[n++]=a%10;
		a/=10;
	}
	for(i=0;i<n-1;i++)
	{
		for(j=i+1;j<n;j++)
	  {
			if(arr[i]<arr[j])
			{
				temp=arr[i];
				arr[i]=arr[j];
				arr[j]=temp;
			}
		}
	}
	temp=0;
	j=1;
	for(i=n-1;i>=0;i--)
	{
		temp+=arr[i]*j;
		j*=10;
	}
	j=10;
	for(i=1;i<n;i++)
	{
		arr[0]+=arr[i]*j;
		j*=10;
	}
	arr[1]=temp-arr[0];
	printf("%d-%d=%d\n",temp,arr[0],arr[1]);
	return arr[1];
}
		
int main() 
{ 
	int a[100];
	int i=0,n;
	while(scanf("%d",&a[i])==1 && a[i]!=-1)
	{
		i++;
	}
	for(i=0;a[i]!=-1;i++)
	{
		printf("N=%d:\n",a[i]);
		if(a[i]-(a[i]%10)*1000-((a[i]/10)%10)*100-((a[i]/100)%10)*10-a[i]/1000==0)
		{
			printf("No!!\n");
		}
		else
		{
			n=0;
			do{
				n++;
		    a[i]=max_min(a[i]);
	   	}while(a[i]!=6174 && a[i]);
	   	printf("OK!! %d times\n",n);
	  }
	}
return 0;
}

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