Question

I have a list of string having currencies in it, for example the size is 1000. I want list if string of all the unique currencies out of 1000 records.

Now its like –

INR
USD
JPY
USD
USD
INR

and I want List of string like –

INR
USD
JPY

only unique record

Preferably without using Linq

Answer 1

EDIT:

I missed the part “preferably without using LINQ”,
You may try the following if you are using .Net framework 2.0 or you don’t want to use LINQ.

List<string> list = new List<string> { "abc", "abc", "ab", "def", "abc", "def" };
list.Sort();
int i = 0;
while (i < list.Count - 1)
{
    if (list[i] == list[i + 1])
        list.RemoveAt(i);
    else
        i++;
}

use Distinct()

List<string> list = new List<string> { "abc", "abc", "ab", "def", "abc","def" };
List<string> uniqueList = list.Distinct().ToList();

The uniqueList will contain 3 items "abc","ab","def"

Remember to include: using System.Linq; at the top