暴力题-你好2020
描述
思路
暴力
代码
import java.util.*;
public class 你好 {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
System.out.println(getCount(n));
}
public static int getCount(int n) {
int count = 0;
for (int i = 1; i <= n; i++) {
String tmp = i + "";
int len = tmp.length();
if ((len & 1) == 1)
continue;
int tmpval = i;
int tmpval2 = 0;
for (int k = 0; k < len / 2; k++) {
tmpval2 += (int) (Math.pow(10,k)*(tmpval%10));
tmpval/=10;
}
if (tmpval2 == tmpval)
count+=i;
}
return count;
}
}