replace string

hi all,

i have a string need to replace every 10th blank space of the string

with some special character.is it possible, the string does not have any

“\n”, one single line.

suppose this is the string "i have a string need to replace every 10th

blank space of the string with some special character.is it possible,

the string does not have any “\n”, one single line." need to place @ in

place of every 10 blank space.

What have you tried in order to achieve this?
You may not end up with the most elegant solution yourself but surely any programmer can work out some way of achieving this.
Post your efforts and there may be some help.

Colin