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  1.  
  2. using System;
  3. using System.Text.RegularExpressions;
  4.  
  5. class Program
  6. {
  7.   static void Main()
  8.   {
  9.     string contents = "_-uUa, -_uU, _-Ha";
  10.     string find = "uU";
  11.     string replace = "123";
  12.     contents = Regex.Replace(contents, Regex.Escape(find) + @"(?![a-zA-Z])", Regex.Escape(replace));
  13.     Console.WriteLine(contents);
  14.   }
  15. }
Success #stdin #stdout 0.06s 37296KB
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stdin
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Standard input is empty
stdout
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_-uUa, -_123, _-Ha
https://ideone.com/IDZt3F
language:
C# (gmcs 5.20.1)
created:
11 years ago
visibility:
public

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