给一个不多于5位的正整数,要求1,求出它是几位数!2分别打印出每一位数字!3按逆序打印出各数字!

package comm.db2;
/**
* @author jifei
*
*/
public class Order {
String str1 = "";
int tempi = 0;
public Order() {
}
public Order(String temp) {
str1 = temp;
tempi = str1.length();
}
/**
* 得到最小的
*
* @param temp
* @return
*/
public String getMin(String temp) {
temp = str1;
char ch[];
ch = temp.toCharArray();
int len = ch.length;
int arry1[] = new int[len];
int ii = 0;
for (int i = 0; i < len; i++) {
arry1[i] = Integer.parseInt(String.valueOf(ch[i]));
}
ii = arry1[0];
for (int i = 0; i < len; i++) {
if (ii >= arry1[i]) {
ii = arry1[i];// 小的 赋给11
}
}
return ii + "";
}
/**
* 得到除去最小的字符串
*
* @param temp
* @param temp2
* @return
*/
public String reFirst(String temp,String temp2) {
temp = temp.replaceFirst(temp2,"");
str1 = temp;
System.out.println(temp);
return temp;
}
public String getOrder() {
String str = "",minstr = "";
String tempstr = "";
tempstr = str1;
for (int i = 0; i < tempi; i++) {
minstr = getMin(tempstr);
tempstr = reFirst(str1,minstr);
str += "" + minstr + ",";
}
return str;
}
/**
* @param args
*/
public static void main(String[] args) {
Order order = new Order("4810223");
System.out.println(order.getOrder());
}
}