Sorting

karthik v

15y1.9k.NET

Hi Experts

I have a problem with sorting an array
I have an array with dynamic size which consists of elements
string array []= {PSum^1^CPP^^^^^^^,PSum^2^CPP^^^^^^^,PSum^3^CPP^^^^^^^,PSum^1^CPP with Auto^^^^^^^,PSum^2^Auto^^^^^^^};

now i have to sort the array on the basis of the integer number present in each element of the array.The order needs to be ascending and i have any of the two array elements with the same number they should be present at the consecutive locations of the sorted array.

3 Replies

Know the answer? Post it — somebody with the same question will find it here.

Vulpes15y ago
Accepted answer
Try the following:

using System;
using System.Collections.Generic;
using System.Text.RegularExpressions;

class Pair
{
public int Number { get; private set; }
public string Text { get; private set; }

public Pair(int number, string text)
{
Number = number;
Text = text;
}
}

class PairComparer : IComparer
{
public int Compare(Pair x, Pair y)
{
return x.Number.CompareTo(y.Number);
}
}

class Test
{
static void Main()
{
string[] array = {"PSum^1^CPP^^^^^^^","PSum^2^CPP^^^^^^^","PSum^3^CPP^^^^^^^","PSum^1^CPPwithAuto^^^^^^^","PSum^2^Auto^^^^^^^"};
Pair[] pairs = new Pair[array.Length];
string regExp = @"\d+";
for(int i = 0; i < array.Length; i++)
{
Match m = Regex.Match(array[i], regExp);
pairs[i] = new Pair(int.Parse(m.Value), array[i]);
}
Array.Sort(pairs, new PairComparer());

// check it worked

foreach(Pair p in pairs) Console.WriteLine("{0} : {1}", p.Number, p.Text);
Console.ReadKey();
}
}
karthik v15y ago
Thank you vulpes....
Vulpes15y ago
With reference to your query about inaccessiblity errors which seems to have disappeared from the thread (?), I'd declare both the Pair and PairComparer classes to be public if you're going to use them from an ASP.NET application.