Alphanumeric sorting

Question

This program is in the following website but not working. Please fix the error.
http://www.dotnetperls.com/alphanumeric-sorting

using System;
using System.Collections;

class Program
{
static void Main()
{
string[] highways = new string[]
{
"100F",
"50F",
"SR100",
"SR9"
};
//
// We want to sort a string[] array called highways in an
// alphanumeric way. Call the static Array.Sort method.
//
Array.Sort(highways, new AlphanumComparatorFast());
//
// Display the results
//
foreach (string h in highways)
{
Console.WriteLine(h);
}
}
}

Akkiraju Ivaturi · Answer

public class AlphanumComparatorFast : IComparer { public int Compare(object x object y) { string s1 = x as string; if (s1 == null) { return 0; } string s2 = y as string; if (s2 == null) { return 0; } int len1 = s1.Length; int len2 = s2.Length; int marker1 = 0; int marker2 = 0; // Walk through two the strings with two markers. while (marker1 { char ch1 = s1[marker1]; char ch2 = s2[marker2]; // Some buffers we can build up characters in for each chunk. char[] space1 = new char[len1]; int loc1 = 0; char[] space2 = new char[len2]; int loc2 = 0; // Walk through all following characters that are digits or // characters in BOTH strings starting at the appropriate marker. // Collect char arrays. do { space1[loc1++] = ch1; marker1++; if (marker1 { ch1 = s1[marker1]; } else { break; } } while (char.IsDigit(ch1) == char.IsDigit(space1[0])); do { space2[loc2++] = ch2; marker2++; if (marker2 { ch2 = s2[marker2]; } else { break; } } while (char.IsDigit(ch2) == char.IsDigit(space2[0])); // If we have collected numbers compare them numerically. // Otherwise if we have strings compare them alphabetically. string str1 = new string(space1); string str2 = new string(space2); int result; if (char.IsDigit(space1[0]) && char.IsDigit(space2[0])) { int thisNumericChunk = int.Parse(str1); int thatNumericChunk = int.Parse(str2); result = thisNumericChunk.CompareTo(thatNumericChunk); } else { result = str1.CompareTo(str2); } if (result != 0) { return result; } } return len1 - len2; } } using System; using System.Collections; class Program { static void Main() { string[] highways = new string[] { 100F 50F SR100 SR9 }; // // We want to sort a string[] array called highways in an // alphanumeric way. Call the static Array.Sort method. // Array.Sort(highways new AlphanumComparatorFast()); // // Display the results // foreach (string h in highways) { Console.WriteLine(h); } } } Fixed :)

Maha · Answer

Thank you