1 /* 2 * Copyright 2022 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.mobileer.oboetester; 18 19 import java.util.ArrayList; 20 21 class DoubleStatistics { 22 ArrayList<Double> mValues = new ArrayList<Double>(); 23 private double mMin = Double.MAX_VALUE; 24 private double mMax = Double.MIN_VALUE; 25 private double mSum = 0.0; 26 27 // Number of measurements. count()28 public int count() { 29 return mValues.size(); 30 } 31 add(double value)32 public void add(double value) { 33 mValues.add(value); 34 mMin = Math.min(value, mMin); 35 mMax = Math.max(value, mMax); 36 mSum += value; 37 } 38 calculateMeanAbsoluteDeviation(double mean)39 public double calculateMeanAbsoluteDeviation(double mean) { 40 double deviationSum = 0.0; 41 for (double value : mValues) { 42 deviationSum += Math.abs(value - mean); 43 } 44 return deviationSum / mValues.size(); 45 } 46 47 // This will crash if there are no values added. calculateMean()48 public double calculateMean() { 49 return mSum / mValues.size(); 50 } 51 getMin()52 public double getMin() { 53 return mMin; 54 } 55 getMax()56 public double getMax() { 57 return mMax; 58 } 59 getSum()60 public double getSum() { 61 return mSum; 62 } 63 64 // This will crash if there are no values added. getLast()65 public double getLast() { 66 return mValues.get(mValues.size() - 1); 67 } 68 } 69