更新

作业/刘航宇-day42/第三题/P2840.java

@@ -0,0 +1,17 @@
+import java.util.*;
+
+public class P2840 {
+    public static void main(String[] args) {
+        Scanner in = new Scanner(System.in);
+        List<Integer> nums = new ArrayList<>();
+        while (in.hasNextInt()) nums.add(in.nextInt());
+        Collections.sort(nums);
+        StringBuilder sb = new StringBuilder();
+        for (int i = 0; i < nums.size(); i++) {
+            if (i > 0) sb.append(' ');
+            sb.append(nums.get(i));
+        }
+        System.out.println(sb.toString());
+        in.close();
+    }
+}