title: Swift- regex to find replace part of result
body: <p>My first question here. I have a code which is single line string which has a lot of symbols. String consists of many similar segments including date. I would like to search for a parts of string with date formatter of dd/mm/yy and insert new line \n symbol before date formatter. I think of using regex, however I am new to swift/proggraming. 
  Can You advice me how to do it? thank you very much!</p>
  
  <pre><code>//Input string
  Let configstring = "01/01/19 AAA BBB CCC DDD EEE FFF GGG HHH III JJJ KKK 0000 1111 0000 0000 1111 0000 0000 LLLL 01/02/19 MMM NNN OOO PPP RRR SSS TTT UUU 0000 1111 1111 0000 1111 1111 0000 1111 0000 0000 WWWW "
  </code></pre>
  
  <p>expected result string </p>
  
  <pre><code>Let configstring = "/n01/01/19 AAA BBB CCC DDD EEE FFF GGG HHH III JJJ KKK 0000 1111 0000 0000 1111 0000 0000 LLLL /n01/02/19 MMM NNN OOO PPP RRR SSS TTT UUU 0000 1111 1111 0000 1111 1111 0000 1111 0000 0000 WWWW "
  </code></pre>