hdu 1544 求字符串回文

#include <stdio.h>
#include <string.h>
int pal(char *str)
{
	int len = strlen(str);
	int l, r;
	int ans = len;
	for(int i=0; i<len; i++)
	{
		l = i-1; r = i+1;
		while(l >= 0 && r < len && str[l] == str[r])
		{l--;	r++;	ans++;}
		l = i; r = i+1;
		while(l >= 0 && r < len && str[l] == str[r])
		{l--;	r++;	ans++;}
	}
	return ans;
}
int main()
{
	//freopen("read.txt", "r", stdin);
	char str[10000];
	while(~scanf("%s", str))
	{
		printf("%d\n", pal(str));
	}
	return 0;
}

来自为知笔记(Wiz)

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