C # exercises answer: pollution # 1 -String- [Difficulty: 0] - view the C # programming classic Q & A, 1000 C # basic exercises waiting for you to challenge

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Pollution # 1 -String- [Difficulty: 0]:

Answer 1:

using System.Text.RegularExpressions;

public class Kata {
  public static string Contamination(string text, string character) 
   =>  new Regex(@".").Replace(text, character);
}​

Answer 2:

using System;
using System.Linq;

public class Kata
{
  public static string Contamination(string text, string character)
  {
    return String.Join("", Enumerable.Repeat(character, text.Length));
  }
}​

Answer 3:

using System.Linq;
public class Kata
{
    public static string Contamination(string text, string character) => string.Concat(Enumerable.Repeat(character, text.Length));
}​

Answer 4:

using System.Linq;

public class Kata
{
  public static string Contamination(string text, string character)
  {
    return string.Concat(Enumerable.Repeat(character, text.Length));
  }
}​

Answer 5:

using System;

public class Kata
{
    public static string Contamination(string text, string character)
    {
        if (text == "" || character == String.Empty)
        {
            return "";
        }
      
        var temp = "";

        for (int i = 0; i < text.Length; i++)
        {
            temp += character;
        }

        return temp;
    }
}​

A6:

public class Kata
{
    public static string Contamination(string text, string character)
    {
        var temp = "";

        for (int i = 0; i < text.Length; i++)
        {
            temp += character;
        }

        return temp;
    }
}​

A7:

public class Kata
{
  public static string Contamination(string text, string character)
  {
     if (text == string.Empty || character == string.Empty) return string.Empty;
     return string.Empty.PadLeft(text.Length, character[0]);
  }
}​

A8:

using System.Linq;
using System;
public class Kata
{
  public static string Contamination(string text, string character)
  {
     return (character == null) ? null : String.Concat(Enumerable.Repeat(character, text.Length)) ;
     
  }
}​

A9:

using System.Linq;

public class Kata
{
    public static string Contamination(string text, string character) =>
        character == "" ? "" : string.Concat(Enumerable.Repeat(character, text.Length));  
}​

Answers 10:

public class Kata
{
  public static string Contamination(string text, string character)
  {
    return string.IsNullOrEmpty(character) ? "" : new string(character[0], text.Length);
  }
}​