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Remove Duplicate characters from String
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//Rextester.Program.Main is the entry point for your code. Don't change it. //Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5 using System; using System.Collections.Generic; using System.Linq; using System.Text.RegularExpressions; namespace Rextester { public class Program { public static void Main(string[] args) { string value1 = RemoveDuplicateChars("Csharpstar"); string value2 = RemoveDuplicateChars("Google"); string value3 = RemoveDuplicateChars("Yahoo"); string value4 = RemoveDuplicateChars("CNN"); string value5 = RemoveDuplicateChars("Line1\nLine2\nLine3"); Console.WriteLine(value1); Console.WriteLine(value2); Console.WriteLine(value3); Console.WriteLine(value4); Console.WriteLine(value5); } static string RemoveDuplicateChars(string key) { // --- Removes duplicate chars using string concats. --- // Store encountered letters in this string. string table = ""; // Store the result in this string. string result = ""; // Loop over each character. foreach (char value in key) { // See if character is in the table. if (table.IndexOf(value) == -1) { // Append to the table and the result. table += value; result += value; } } return result; } } }
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Compilation time: 0,17 sec, absolute running time: 0,13 sec, cpu time: 0,14 sec, average memory usage: 17 Mb, average nr of threads: 3
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Csharpt Gogle Yaho CN Line1 23