From 67393f42f41ab92219deb549f711121c4dab845b Mon Sep 17 00:00:00 2001 From: Nguyễn Gia Phong Date: Sun, 15 Dec 2019 10:34:58 +0700 Subject: [usth/ICT2.2] Object Oriented Programming --- .../my-app/src/main/java/com/mycompany/app/MeanSTD.java | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 usth/ICT2.2/labwork/2/my-app/src/main/java/com/mycompany/app/MeanSTD.java (limited to 'usth/ICT2.2/labwork/2/my-app/src/main/java/com/mycompany/app/MeanSTD.java') diff --git a/usth/ICT2.2/labwork/2/my-app/src/main/java/com/mycompany/app/MeanSTD.java b/usth/ICT2.2/labwork/2/my-app/src/main/java/com/mycompany/app/MeanSTD.java new file mode 100644 index 0000000..eb47914 --- /dev/null +++ b/usth/ICT2.2/labwork/2/my-app/src/main/java/com/mycompany/app/MeanSTD.java @@ -0,0 +1,17 @@ +package com.mycompany.app; + +import java.util.Arrays; + +// Exercise 8 +public class MeanSTD +{ + public static void main(String... args) + { + double n = args.length; + double m = Arrays.stream(args).mapToDouble(Double::parseDouble).sum() / n; + double s = Math.sqrt( + Arrays.stream(args) + .mapToDouble(x -> Math.pow(Double.parseDouble(x) - m, 2)).sum() / n); + System.out.printf("Mean: %f\nStandard deviation: %f\n", m, s); + } +} -- cgit 1.4.1