Slashdot Mirror


User: nylreM

nylreM's activity in the archive.

Stories
0
Comments
5
First seen
Last seen
Profile
(view on slashdot.org)

Comments · 5

  1. Re:Solution (by hand using MegaBlocks) on Programming Puzzles · · Score: 2

    Uh, you have to get the 2x2 block to the upper right silly... Getting it to the lower right does happen as part of the full solution, but it's only the first of the corners you need to visit... See my other post.

  2. Re:Has anyone *actually* solved this? on Programming Puzzles · · Score: 1

    See my other post. I wrote a program. No way I'm wasting my time randomly trying things by hand...

  3. Solution on Programming Puzzles · · Score: 1

    Whipped up a solution finder. Here's the result.

    Pieces numbered scan order as 0, 1, 4, 5, 6, 2, 7, 3, 8. 0 is left, 1 is right, 2 is up, 3 is down. Moves counted one grid pos at a time - there may well be a shorter one under different move metrics. Kinda neat that big square piece visits all corners on way to finish.

    Not that anyone's impressed or anything - pretty easy to write a solver for this sort of puzzle in terms of 64 bit bit-ops. Is there anything in particular about Haskel that's good for this kind of thing?

    Solution found on level 115.
    0:3#1:0#1:0#4:2#5:2#7:2#7:0#5:3#5:3#4:1#7:2# 7:2#0: 1#6:2#3:0#6:2#
    2:0#8:0#8:2#3:1#3:1#2:3#8:0#8:0#0: 3#7:3#7:0#4:0#5: 2#5:2#0:1#8:1#
    6:3#7:0#8:2#8:2#0:0#5:3#5:3#4:1#1: 1#8:1#7:1#6:2#6: 2#0:0#5:0#4:3#
    1:1#7:2#8:0#5:2#3:2#2:1#2:1#0:3#6: 3#8:3#7:3#1:0#1: 0#4:2#5:2#8:1#
    7:3#8:1#5:3#1:1#6:2#7:0#5:0#8:0#4: 3#1:1#5:2#7:1#8: 2#7:1#0:2#2:0#
    2:0#3:3#7:3#7:1#0:1#6:3#6:3#5:0#8: 0#8:2#0:2#7:0#7: 0#3:2#2:1#2:1#
    7:3#3:0#4:3#7:0#2:0#4:3#0:1#8:3#8: 3#5:1#6:2#6:2#8: 0#5:3#1:0#8:3#
    6:3#1:0#0:2#
    done looking - minSolution is 115.

  4. Hysteresis is your friend. on How To Really And Fully Wipe A Hard Drive? · · Score: 2

    http://www.lassp.cornell.edu/sethna/hysteresis/Wha tIsHysteresis.html

    Stick the platters near a source of strong alternating magnetic fields, change the relative 3d orientation of the source a few times, and run the source for a long time. Make sure there's no interposing metal that could reduce the field density at the surface of the platter, or increase field strength to compensate, and then melt the entire drive.

  5. probably compatible with other commercial systems on Reusing Old Satellite Dishes? · · Score: 1

    I know the LNB's for Dish Network and DirecTV are compatible. Probably mutually with PrimeStar.