- Data Structure
- Networking
- RDBMS
- Operating System
- Java
- MS Excel
- iOS
- HTML
- CSS
- Android
- Python
- C Programming
- C++
- C#
- MongoDB
- MySQL
- Javascript
- PHP
- Physics
- Chemistry
- Biology
- Mathematics
- English
- Economics
- Psychology
- Social Studies
- Fashion Studies
- Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Remove all duplicates from a given string in C#
Here is the string.
string str = "ppqqrr";
Now, use Hashset to map the string to char. This will remove the duplicate characters from a string.
var res = new HashSet<char>(str);
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 str = "ppqqrr"; Console.WriteLine("Initial String: "+str); var res = new HashSet<char>(str); Console.Write("New String after removing duplicates:"); foreach (char c in res){ Console.Write(c); } } } }
Output
Initial String: ppqqrr New String after removing duplicates:pqr
Advertisements