题解 | #明明的随机数#
明明的随机数
https://www.nowcoder.com/practice/3245215fffb84b7b81285493eae92ff0
import java.util.Scanner; import java.util.Set; import java.util.HashSet; import java.util.TreeSet; // 注意类名必须为 Main, 不要有任何 package xxx 信息 public class Main { public static void main(String[] args) { Scanner in = new Scanner(System.in); int n = in.nextInt(); Set<Integer> hashSet = new HashSet<>(); for(int i=0; i<n; i++){ hashSet.add(in.nextInt()); } Set<Integer> treeSet = new TreeSet<>( ((o1,o2)->o1.compareTo(o2)) ); treeSet.addAll(hashSet); for(Integer i: treeSet){ System.out.println(i); } } }