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  1. using System;
  2. using System.Globalization;
  3. using System.Linq;
  4. using System.Collections.Generic;
  5.  
  6. public class Test
  7. {
  8. 	public static void Main()
  9. 	{
  10.         string text = "hello \\\"World\\\"";
  11.         var  builder = new System.Text.StringBuilder();
  12.         builder.Append(text[0] == '"' ? "\\\"" : text.Substring(0, 1));
  13.         for (int i = 1; i < text.Length; i++)
  14.         {
  15.             Char next = text[i];
  16.             Char last = text[i - 1];
  17.             if (next == '"' && last != '\\')
  18.             {
  19.                 builder.Append("\\\"");
  20.             }
  21.             else
  22.                builder.Append(next);
  23.         }
  24.         Console.WriteLine(builder.ToString());
  25. 	}
  26. }
Success #stdin #stdout 0.02s 34704KB
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stdin
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Standard input is empty
stdout
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hello \"World\"
https://ideone.com/Xmeh1w
language:
C# (gmcs 5.20.1)
created:
11 years ago
visibility:
public

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