using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Science.Statistics.BasicStatistics
{
    public class Probability
    {
        public Probability()
        {
        }
        public Probability(Event A)
        {
            prob = (double)A.NumberOfOutcomes / (double)A.TotalNumberOfOutcomes;
        }
        private double prob;
        public double Value
        {
            get { return prob; }
            set { prob = value; }
        }
        
        public static Probability And(Event A, Event B)
        {
            Probability PA = new Probability(A);
            Probability PBgA = new Probability(B.GivenEvent);
            Probability res = new Probability();
            res.Value = PA.Value * PBgA.Value;
            return res;
        }

        public static Probability Or(Event A, Event B)
        {
            Probability PA = new Probability(A);
            Probability PB = new Probability(B);
            Probability PAandB = Probability.And(A,B);
            Probability res = new Probability();
            res.Value = PA.Value + PB.Value - PAandB.Value;
            return res;
        }
    }
}