java编程怎么完成任意输入一个正整数,反序输出每一位?

Question

如题所述

Answer 1

public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.print("输入任意正整数：");
StringBuffer sb = new StringBuffer(input.next());
sb.reverse();
System.out.print("逆序为：");
System.out.println(sb);
}