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Artifact 329a03d219b36e695a0615f6d5bc239f4bc0f052:

File master_theorem/murder_at_sea.rx part of check-in [48a095494d] - more master theorem solutions by crc on 2011-09-05 15:12:40. [annotate]


0000: 46 6c 61 67 20 73 65 6d 61 70 68 6f 72 65 73 20  Flag semaphores 
0010: 61 72 65 20 61 74 20 74 68 65 20 68 65 61 72 74  are at the heart
0020: 20 6f 66 20 74 68 69 73 20 70 75 7a 7a 6c 65 2e   of this puzzle.
0030: 20 49 6e 20 74 68 65 20 74 65 78 74 2c 0a 4d 20   In the text,.M 
0040: 70 72 6f 76 69 64 65 73 20 61 20 73 65 72 69 65  provides a serie
0050: 73 20 6f 66 20 74 69 6d 65 73 2e 20 54 68 65 73  s of times. Thes
0060: 65 20 63 6f 72 72 65 73 70 6f 6e 64 20 74 6f 20  e correspond to 
0070: 66 6c 61 67 20 73 65 6d 61 70 68 6f 72 65 0a 70  flag semaphore.p
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00a0: 67 20 70 6f 73 69 74 69 6f 6e 73 20 61 73 20 74  g positions as t
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00e0: 63 6c 65 61 72 2e 0a 0a 53 6f 3a 0a 0a 20 20 37  clear...So:..  7
00f0: 31 35 20 31 33 30 20 36 32 35 20 37 33 30 20 39  15 130 625 730 9
0100: 32 35 20 37 34 35 20 37 33 30 20 39 31 35 20 37  25 745 730 915 7
0110: 30 30 0a 0a 54 68 65 73 65 20 61 72 65 20 6f 75  00..These are ou
0120: 72 20 74 69 6d 65 73 2e 0a 0a 20 20 3a 20 64 69  r times...  : di
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0180: 77 68 65 6e 0a 20 20 20 20 5b 20 36 32 35 20 3d  when.    [ 625 =
0190: 20 5d 20 5b 20 64 72 6f 70 20 27 47 20 70 75 74   ] [ drop 'G put
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01b0: 34 35 20 3d 20 5d 20 5b 20 64 72 6f 70 20 27 48  45 = ] [ drop 'H
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01d0: 20 5b 20 37 30 30 20 3d 20 5d 20 5b 20 64 72 6f   [ 700 = ] [ dro
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0200: 20 64 72 6f 70 20 27 4d 20 70 75 74 63 20 5d 20   drop 'M putc ] 
0210: 77 68 65 6e 0a 20 20 20 20 5b 20 39 31 35 20 3d  when.    [ 915 =
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0240: 32 35 20 3d 20 5d 20 5b 20 64 72 6f 70 20 27 53  25 = ] [ drop 'S
0250: 20 70 75 74 63 20 5d 20 77 68 65 6e 20 3b 0a 0a   putc ] when ;..
0260: 4c 65 73 73 20 65 6c 65 67 61 6e 74 20 74 68 61  Less elegant tha
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03e0: 41 6e 64 20 61 70 70 6c 79 20 61 20 71 75 6f 74  And apply a quot
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0500: 61 6e 73 77 65 72 2e 0a 0a                       answer...