Java 練習

java 練習

import java.util.*;

class demo1 {
public static void main(String[] args) {
int x = 123456789;
StringBuffer b = new StringBuffer();
while (x != 0) {
int t = x % 10;
x = (x - t) / 10;
b.append(t + ",");
}
System.out.println(b);
}
}

//
C:\>java demo1
9,8,7,6,5,4,3,2,1,