Sort Strings with Numberic and Text

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Sort Strings with Numberic and Text

Hi all

I've search the web for string sorting, and I've tried all the confentional ways of sorting. I need help in sorting a strings contraining numbers and text. Here is an example I did to see if SortedList won't work. The number will alway be infront of the letter.

string[] sArr = new string[] { "01A", "10A", "02A", "01B", "06B","22A","0A3" };

SortedList<string, string> sortedList = new SortedList<string, string>();

foreach(string s in sArr)

{

sortedList.Add(s, s);

}

foreach(KeyValuePair<string, string> kvp in sortedList)

{

Console.WriteLine(kvp.Value);

}

THE Rest comes out as

01A

01B

02A

03A

06B

10A

22A

WHERE IT SHOULD actaully be

01A

02A

03A

10A

22A

01B

06B

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Sort Strings with Numberic and Text

ziad_dodin
Thanks James.

This should work perfect.
Andy McDonald
Since you have special sorting needs, you will need to define a custom comparer, and you it to initialize the SortedList:

SortedList<string, string> sortedList = new SortedList<string, string>(new NumberNumberLetter());

The comparer itself is quite simple:
```
// Warning: Untested code ahead.
```
```
class NumberNumberLetter : IComparer<string>
```
```
{
```
```
  public int Compare(string lhs, string rhs)
```
```
  {
```
```
    // Compare the letter
```
```
    int retv = lhs[2].CompareTo(rhs[2]);
```
```
    if (retv == 0)
```
```
      retv = lhs.CompareTo(rhs); // compare number
```
```
    return retv;
```
```
  }
```
```
}
```
Sort Strings with Numberic and Text

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