From 67393f42f41ab92219deb549f711121c4dab845b Mon Sep 17 00:00:00 2001
From: Nguyễn Gia Phong <vn.mcsinyx@gmail.com>
Date: Sun, 15 Dec 2019 10:34:58 +0700
Subject: [usth/ICT2.2] Object Oriented Programming

---
 usth/ICT2.2/labwork/4/Stats.java | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 usth/ICT2.2/labwork/4/Stats.java

(limited to 'usth/ICT2.2/labwork/4/Stats.java')

diff --git a/usth/ICT2.2/labwork/4/Stats.java b/usth/ICT2.2/labwork/4/Stats.java
new file mode 100644
index 0000000..88d6832
--- /dev/null
+++ b/usth/ICT2.2/labwork/4/Stats.java
@@ -0,0 +1,19 @@
+import java.util.ArrayList;
+import java.util.Scanner;
+
+class Stats
+{
+  public static void main(String... args)
+  {
+    var scanner = new Scanner(System.in);
+    int n = scanner.nextInt();
+    var numbers = new ArrayList<Double>();
+    for (int i = 0; i < n; ++i)
+      numbers.add(scanner.nextDouble());
+
+    double m = numbers.stream().mapToDouble(Double::doubleValue).sum() / n;
+    double s = Math.sqrt(numbers.stream()
+                         .mapToDouble(x -> Math.pow(x - m, 2)).sum() / n);
+    System.out.printf("Mean: %f\nStandard deviation: %f\n", m, s);
+  }
+}
-- 
cgit 1.4.1