Sha256: 356704c4f8a57cb6a748e12182ae4b4a13093c717b7645c4d643ff4921a67640
Contents?: true
Size: 1.04 KB
Versions: 98
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Stored size: 1.04 KB
Contents
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
public class Hexadecimal
{
private static readonly Dictionary<char, int> AlphaValues = new Dictionary<char, int>
{
{ 'a', 10 },
{ 'b', 11 },
{ 'c', 12 },
{ 'd', 13 },
{ 'e', 14 },
{ 'f', 15 }
};
public static int ToDecimal(string value)
{
if (IsNotValidHexadecimal(value)) return 0;
return value.Select((c, i) => GetNumericValue(c) * SixteenToThePowerOf(value.Length - i - 1)).Sum();
}
private static bool IsNotValidHexadecimal(string value)
{
return Regex.IsMatch(value, "[^0-9abcdef]", RegexOptions.IgnoreCase);
}
private static int GetNumericValue(char value)
{
if (char.IsNumber(value))
return (int)char.GetNumericValue(value);
return AlphaValues[value];
}
private static int SixteenToThePowerOf(int power)
{
return (int)Math.Pow(16, power);
}
}
Version data entries
98 entries across 98 versions & 1 rubygems