diff options
Diffstat (limited to 'usth/ICT2.2/labwork/2/my-app/src/main/java/com/mycompany/app/MeanSTD.java')
-rw-r--r-- | usth/ICT2.2/labwork/2/my-app/src/main/java/com/mycompany/app/MeanSTD.java | 17 |
1 files changed, 17 insertions, 0 deletions
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); + } +} |