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C# Program to remove duplicate characters from String
Use Hashset to remove duplicate characters.
Here is the string −
string myStr = "kkllmmnnoo";
Now, use HashSet to map the string to char. This will remove the duplicate characters from a string.
var unique = new HashSet<char>(myStr);
Let us see the complete example −
Example
using System;
using System.Linq;
using System.Collections.Generic;
namespace Demo {
class Program {
static void Main(string[] args) {
string myStr = "kkllmmnnoo";
Console.WriteLine("Initial String: "+myStr);
var unique = new HashSet<char>(myStr);
Console.Write("New String after removing duplicates: ");
foreach (char c in unique)
Console.Write(c);
}
}
}Output
Initial String: kkllmmnnoo New String after removing duplicates: klmno
Updated on: 22-Jun-2020
8K+ Views
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