URAL 1001 Reverse Root

• 输入输出优化：直接加BufferedStream

 1 import java.io.BufferedInputStream;
 2 import java.io.BufferedOutputStream;
 3 import java.io.PrintWriter;
 4 import java.util.ArrayList;
 5 import java.util.List;
 6 import java.util.Scanner;
 7  
 8 public class P1001
 9 {
10  
11     public static void main(String[] args)
12     {
13         try (Scanner cin = new Scanner(new BufferedInputStream(System.in)))
14         {
15             List<Double> inputs = new ArrayList<>();
16             while (cin.hasNext())
17                 inputs.add(cin.nextDouble());
18             try (PrintWriter writer = new PrintWriter(new BufferedOutputStream(System.out)))
19             {
20                 for (int i = inputs.size() - 1; i >= 0; i--)
21                     writer.println(String.format("%.4f", Math.sqrt(inputs.get(i))));
22             }
23         }
24     }
25  
26 }