bored?

by math_explorer, Feb 21, 2011, 5:28 AM

what?
(defun ******* (old-li)
  (block bpb
    (let ((len (1- (length old-li)))
          (li (copy-list old-li)))
      (let* ((turn
        (do ((i 0 (1+ i))
             (tpr nil))
          ((or tpr (>= i len)) tpr)
          (when (> (elt li i) (elt li (1+ i)))
            (setf tpr (1+ i)))))
             (turn-value 
               (if turn 
                 (elt li turn)
                 (return-from bpb nil)))
             (incr-seq (subseq li 0 turn))
             (rest-seq (subseq li turn))
             (nrev-seq (nconc (nreverse incr-seq) rest-seq)))
        (let* ((min-index 
                (do ((i 0 (1+ i))
                     (min-found 0)
                     (min-index-ret nil))
                  ((>= i turn) min-index-ret)
                  (let ((cur (elt nrev-seq i)))
                    (when 
                      (and 
                        (> cur turn-value)
                        (or (< cur min-found) 
                            (not min-index-ret)))
                      (setf min-found cur)
                      (setf min-index-ret i))))))
          (setf (elt nrev-seq turn) (elt nrev-seq min-index))
          (setf (elt nrev-seq min-index) turn-value)
          nrev-seq)))))


AGC II: Congrats, you found the treasure! PM me the word "grindstone".
This post has been edited 2 times. Last edited by math_explorer, Jan 26, 2013, 4:30 AM

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