AcWing 425. 明明的随机数 - Java
原题链接
简单
作者:
KYCygni
,
2021-02-10 11:11:51
,
所有人可见
,
阅读 306
Java 代码
import java.util.Scanner;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Collections;
public class Main
{
public static void main (String[] args)
{
Scanner cin = new Scanner(System.in);
int num = cin.nextInt();
HashSet<Integer> s = new HashSet<Integer>();
for (int i = 0; i < num; i ++)
{
s.add(cin.nextInt());
}
ArrayList<Integer> list = new ArrayList<Integer>(s);
Collections.sort(list);
System.out.println(list.size());
for (int i : list)
{
System.out.print(i + " ");
}
}
}