Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import java.util.*;
import static java.lang.Math.*;

public class Main {
    /**
     * 
     * @param pressingLength length of pause between clicks
     * @param mathExpectation mathExpectation values list 
     * @return dispersion values list
     */
    public static List<Double> dispersion(Map<String, Long> pressingLength, List<Double> mathExpectation) {
        int N = pressingLength.size() - 1;
        //dispersion
        int i = 0;
        ArrayList<Double> dispersion = new ArrayList<Double>();
        for (String key : pressingLength.keySet()) {
            double x;
            double s = 0.0;
            for (String k : pressingLength.keySet()) {
                if (!k.equals(key)) {
                    x = pressingLength.get(k) - mathExpectation.get(i);
                    s += x * x;
                }
            }
            dispersion.add(sqrt(s / (N - 1)));
            i++;
        }
        return dispersion;
    }
}