C# Online Compiler | .NET Fiddle

<no name> by Anonymous

using System;
using System.Text;	
public class Program
{
	public static void Main()
	{
		var line = "I like <CHOICE [cars and bikes] [apple and oranges]>";
		var result = new StringBuilder();

		bool inChoice = false ;
		bool inOption = false;
		bool skip = false;

		foreach (char c in line)
		{
		   if (!inChoice && c == '<') inChoice = true;
		   else if (inChoice && c == '>') inChoice = skip = false;
		   else if (!skip && !inOption && c == '[') inOption = true;
		   else if (inOption && c == ']') skip = true;
		   else if (skip || (inChoice && !inOption)) continue;
		   else result.Append(c);
		}

		Console.WriteLine(result);
	}
}

​x
 
using System;
using System.Text;  
public class Program
{
    public static void Main()
    {
        var line = "I like <CHOICE [cars and bikes] [apple and oranges]>";
        var result = new StringBuilder();
​
        bool inChoice = false ;
        bool inOption = false;
        bool skip = false;
​
        foreach (char c in line)
        {
           if (!inChoice && c == '<') inChoice = true;
           else if (inChoice && c == '>') inChoice = skip = false;
           else if (!skip && !inOption && c == '[') inOption = true;
           else if (inOption && c == ']') skip = true;
           else if (skip || (inChoice && !inOption)) continue;
           else result.Append(c);
        }
​
        Console.WriteLine(result);
    }
}

Hello World
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Berkualitas

===================================================================================================================================================

Menu Pilihan
-----------------
1. Sony Xperia E1 White  =Rp 1.299.000
2. Lenovo A526 Blue      =Rp 1.399.000
3. Samsung Galaxy Mega 6.3 I9200 =Rp 4.950.000
4. Smartfen Andromax G2 Blue   =Rp 899.000
5. Samsung Galaksi S4 I9500    =Rp 6.650.000

Masukan Angka Pilihan :

Cached Result
Last Run:	5:24:52 pm
Compile:	0.11s
Execute:	0.01s
Memory:	88kb
CPU:	0s

View IL Code