title: Splicing strings in C#
body: <p>How do you splice strings in C#? how would i translate the following python code into C#? </p>
  
  <pre><code>string = "this is a string"
  
  string[-1]          ## last letter
  string[:2]           ## first 2 letters
  string[2:]           ## letters after 2nd letter
  string[-2]            ## last 2 letters
  
  words = string.split()    ## list of words 
  ## ["this","is","a","string"]
  string_again = " ".join(words)  ## list of words back to 
  ## string
  </code></pre>