> runtime error代码(原封不动的copy过来了):
> #include<stdio.h>
> char ch[5001];
> short min[5000][5000]={0};
> int minnum(short a,short b)
> {
> 	return a>b?b:a;
> }
> int main()
> {
> 	short n;
> 	short i,j,k;
> 	scanf("%d",&n);
> 	scanf("%s",ch);
>     for(i=n-1;i>=0;i--)
> 		for(j=i;j<n;j++)
> 		{
> 			if(ch[i]==ch[j])
>                min[i][j]=min[i+1][j-1];
> 			else
> 				min[i][j]=1+minnum(min[i+1][j],min[i][j-1]);
> 		}
> 		printf("%d\n",min[0][n-1]);
> 		return 0;
> }
> 这是哪份AC的代码:
> #include<stdio.h>
> char ch[5001];
> short min[5000][5000]={0};
> int minnum(short a,short b)
> {
> 	return a>b?b:a;
> }
> int main()
> {
> 	short n;
> 	short i,j,k;
> 	scanf("%d",&n);
> 	scanf("%s",ch);
>     for(i=n-1;i>=0;i--)
> 		for(j=i+1;j<n;j++)
> 		{
> 			if(ch[i]==ch[j])
>                min[i][j]=min[i+1][j-1];
> 			else
> 				min[i][j]=1+minnum(min[i+1][j],min[i][j-1]);
> 		}
> 		printf("%d\n",min[0][n-1]);
> 		return 0;
> }