title: Randomly split a string at space (" ")
body: <p>I want to create two random substrings from a given string, which on joining will give me my previous string. How can it be done?</p>
  
  <p>Example:
  "My name is Robert" is the complete string, then substring can be like<br>
      sub1:"My name"<br>
      sub2:"is Robert"</p>