Calculates the median from the given values. - CSharp System

CSharp examples for System:Math Number

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Description

Calculates the median from the given values.

Demo Code

//     Copyright (c) Rico Suter. All rights reserved.
using System.Linq;
using System.Collections.Generic;
using System;//from w w w  . j a va  2  s. c  om

public class Main{
        /// <summary>Calculates the median from the given values. </summary>
        /// <param name="values">The values. </param>
        /// <returns>The median. </returns>
        public static decimal Median(this IEnumerable<decimal> values)
        {
            var sortedList = values.OrderBy(n => n);
            var count = sortedList.Count();
            var itemIndex = count / 2;

            if (count % 2 == 0)
                return (sortedList.ElementAt(itemIndex) + sortedList.ElementAt(itemIndex - 1)) / 2;
            return sortedList.ElementAt(itemIndex);
        }
        /// <summary>Calculates the median from the given values. </summary>
        /// <param name="values">The values. </param>
        /// <returns>The median. </returns>
        public static double Median(this IEnumerable<double> values)
        {
            var sortedList = values.OrderBy(n => n);
            var count = sortedList.Count();
            var itemIndex = count / 2;

            if (count % 2 == 0)
                return (sortedList.ElementAt(itemIndex) + sortedList.ElementAt(itemIndex - 1)) / 2;
            return sortedList.ElementAt(itemIndex);
        }
}

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