题解 | #数字颠倒#
数字颠倒
https://www.nowcoder.com/practice/ae809795fca34687a48b172186e3dafe
题解
此题可以使用StringBuilder的reserve方法进行颠倒。
代码
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
while (sc.hasNextLine()) {
String str = sc.nextLine();
StringBuilder sb = new StringBuilder(str);
System.out.println(sb.reverse());
}
}
}
