以前写的，现在看到了，感觉low的不想多说话，直接上代码！
例子1
public class Demo03 {public static void main(String[] args) {
int a= 86792;
int result= 0;
for(int i=1;i<6;i++){
for(int j=1;j<i;){
a/=10;
break;
}
for(int k=0;k<5;){
result=a%10;
break;
}
System.out.print(result);
}
}
}
例子2
public class Demo04 {public static void main(String[] args) {
Scanner sc =new Scanner(System.in);
System.out.println("请输入一个整数");
String aa= sc.next();
String[] b=aa.split("");
System.out.println(Arrays.toString(b));
for(String cc:b){
System.out.print(cc);
}
System.out.println(" ");
String[] bb = new String[]{};
List<String> list = new ArrayList<String>();
for(int i=0;i<b.length;i++){
list.add(b[b.length-1-i]);
}
for(String s :list){
System.out.print(s);
}
例子3
public class Demo04 {
public static void main(String[] args) {
int c=1013000;
int m =0;
while(c%10==0){
c=c/10;
}
while(c!=0){
m=c%10;
System.out.print(m);
c=c/10;
}
}
}