write code for RLE

sorry for starting many threads but soon i will go away for some months
i guess so the group will be get rid of my threads - and until i am
i dont like to ged bored if i code something so i prefer to
start many threads just for fun and with no big reason
here such thread is write code for RLE (run length encoding)
then i cpuld eventualy compare it how i would write it -
it shouldnt be hard task but may be good to compare style
of coding or something (i will probbaly write it a bit later and post it, but dont know yet know when)