题解 | #自守数#
自守数
http://www.nowcoder.com/practice/88ddd31618f04514ae3a689e83f3ab8e
endwith
import java.util.Scanner; // 注意类名必须为 Main, 不要有任何 package xxx 信息 public class Main { public static void main(String[] args) { Scanner in = new Scanner(System.in); // 注意 hasNext 和 hasNextLine 的区别 while (in.hasNextInt()) { // 注意 while 处理多个 case int a = in.nextInt(); System.out.println(CalcAutomorphicNumbers(a)); } } public static int CalcAutomorphicNumbers( int n) { /*在这里实现功能*/ int count = 0; for(int i = 0;i<=n;i++){ long result = i * i; String num1 = i +""; String num2 = result + ""; if (num2.endsWith(num1)){ count++; } } return count; } }