codewars 2일차

<8kyu> Returning Strings

※아래에 답이 있습니다. 

 

Solution

using System;

public static class Kata
{
  public static string Greet(string name)
  {
    throw new NotImplementedException("Greet is not implemented.");
  }
}

여기서 헷갈렸던 점..

위에 throw new NotImplementedException("Greet is not implemented."); 를 지우고 문제를 푸는거 였는데..

안지우고 하다 보니 문제 통과가 안되었다..

 

 

Sample Tests

namespace Solution 
{
  using NUnit.Framework;
  using System;

  [TestFixture]
  public class SolutionTest
  {
    [Test]
    public void SampleTest()
    {
      Assert.That(Kata.Greet("Ryan"), Is.EqualTo("Hello, Ryan how are you doing today?"));
    }
  }
}

Assert.That이 뭔지 몰라서 조금 헷갈렸는데 코드를 보니까 대충 Ryan이라고 입력 했을 때 왼쪽하고 오른쪽이 같으면 

통과 될거란 생각에 일단 코드를 작성해보자 라고 생각하게 됨.

 

 

제출한 답.

using System;

public static class Kata
{
  public static string Greet(string name)
  {
    string sentense = "Hello, " + name + " how are you doing today?";
    return sentense;
  }
}

 

모범 사례를 보니 훨 씬 간단하게 만들어져 있었다.

using System;

public static class Kata
{
  public static string Greet(string name)
  {
    return $"Hello, {name} how are you doing today?";
  }
}
//=======================================================================================

using System;

public static class Kata
{
  public static string Greet(string name) => $"Hello, {name} how are you doing today?";
}

//=======================================================================================
using System;

public static class Kata
{
  public static string Greet(string name)
  {
    return !String.IsNullOrEmpty(name) ? $"Hello, {name} how are you doing today?" : "Name is empty.";         
    
  }
}
//=======================================================================================
using System;

public static class Kata
{
  public static string Greet(string name)
  {
    return String.Format("Hello, {0} how are you doing today?", name);
  }
}
//=======================================================================================
using System;

public static class Kata
{
  public static string Greet(string name)
  {
    return "Hello, "+name+" how are you doing today?";
  }
}

 

가장 간결했던 답은 아래에 답이 가장 간결했다.

using System;

public static class Kata
{
  public static string Greet(string name) => $"Hello, {name} how are you doing today?";
  // single line approach
}