题解 | #提取不重复的整数#
提取不重复的整数
http://www.nowcoder.com/practice/253986e66d114d378ae8de2e6c4577c1
import java.io.*;
public class Main{
public static void main(String [] args) throws Exception{
BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
int num = Integer.parseInt(bf.readLine());
int [] arr = new int[10];
StringBuilder sb = new StringBuilder();
int divisor=10;
int temp ;
while (num>0){
temp = num % 10;
num /=divisor;
if(arr[temp] == 1){
continue;
}
arr[temp] = 1;
sb.append(temp);
}
System.out.println(sb);
}
}