use regex to parse the string into an array and concat the array backward.
回複:請教一ALGORITHM問題
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• This definitely works, but uses too much memory. I -亂彈- ♂ (140 bytes) () 03/04/2009 postreply 06:47:32
• 回複:This definitely works, but uses too much memory. I -sub101- ♂ (197 bytes) () 03/04/2009 postreply 08:01:07