Given a string text with no spaces, return its characters separated by single spaces — for example "h e l l o". This is the "print every character" exercise, done so the output can be checked: each character is visited in order with an indexString IndexThe position of a character in a string, starting from 0., just like an array. The small catch is the separatorSeparatorText placed between items, such as a comma or a space — but not before the first or after the last.: a space belongs between characters, not after the last one.