Did I go wrong some where cos it seems to miss it. 

00000110 needle offset 14
00001010 needle offset 0
00001101 needle offset 15
00010100 needle offset 1
00011010 needle offset 16
00101001 needle offset 2
00101010 needle offset 7
01000001 needle offset 12
01001010 needle offset 5
01010000 needle offset 10
01010010 needle offset 3
01010100 needle offset 8
10000011 needle offset 13
10010101 needle offset 6
10100000 needle offset 11
10100101 needle offset 4
10101000 needle offset 9

The first group to inspect is at position (needle_len - 8): 10111011. 
That does not appear in the needle, so apply the maximum shift, which 
+is 17 (needle_len - 8 + 1). 
Were it present in the needle, then the shift would've been (needle_le
+n - 8 - offset), followed by compare.

                ????????         ????????         ????????         ???
+?????         ????????     ????????        ????????         ????????
0000111010011100101110110111000111101011110011111011111110000000100010
+0100001010010101000001101000110010011000101101010110011011000000
                                                                      
+  
000010100101010000011010 Not there; max. shift 17
                 000010100101010000011010 Not there +17
                                  000010100101010000011010 Not there +
+17
                                                   0000101001010100000
+11010 Not there +17
                                                                    00
+0010100101010000011010 In table +12
                                                                      
+          000010100101010000011010 Not there +17
                                                                      
+                           000010100101010000011010 Not there +17
                                                                      
+                                            000010100101010000011010 
+Not there +17

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In reply to Re^6: Why Boyer-Moore, Horspool, alpha-skip et.al don't work for bit strings. (And is there an alternative that does?) by BrowserUk
in thread Why Boyer-Moore, Horspool, alpha-skip et.al don't work for bit strings. (And is there an alternative that does?) by BrowserUk

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