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Programming Help. PLEASE (2)

  • To: mathgroup at
  • Subject: [mg22986] Programming Help. PLEASE (2)
  • From: gemilord at (Geoffrey B Milord)
  • Date: Sun, 9 Apr 2000 01:45:51 -0400 (EDT)
  • Organization: University of Pennsylvania
  • Sender: owner-wri-mathgroup at

Why does the following routine Milord[1,3] work but not Milord[2,3]?
I am not familiar with Mathematica but I stepped through it. The problem seems 
to be with the assignment of t1 in the last line of the for loop.

When you post mail me as well.


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(*CacheID: 232*)

(*NotebookOptionsPosition[      2988,         82]*)
(*NotebookOutlinePosition[      3664,        106]*)
(*  CellTagsIndexPosition[      3620,        102]*)


    \(\(\(\[IndentingNewLine]\)\(F = \ 
      BitOr[BitAnd[#1, #2], BitAnd[BitNot[#1], #3]] &\)\)\)], "Input"],

    \(BitOr[BitAnd[#1, #2], BitAnd[BitNot[#1], #3]] &\)], "Output"]
}, Open  ]],

    \(\[IndentingNewLine]\)], "Input"],

          t1}, \ \[IndentingNewLine]t0\  = {}; \t\[IndentingNewLine]t0\  = 
            Table[Random[Integer], {128}]]; \[IndentingNewLine]t1\  = 
          t0[\([1]\)]; \[IndentingNewLine]t1\  = \ 
          RotateRight[t1, Mod[\(-start\), 4]*32]; \[IndentingNewLine]For\ [
          i = 0, i < numSteps, \(i++\), \[IndentingNewLine]\ 
          t1\  = Join[
              Table[F[t1[\([j + 32]\)], t1[\([j + 64]\)], 
                  t1[\([j + 96]\)]], {j, 32}], 
              Table[t1[\([j]\)], {j, 33, 128}]]; \[IndentingNewLine]t0 = \ 
            Append[t0, \ 
                t1, \(-Mod[i - start, 4]\)*32]]; \[IndentingNewLine]t1\  = 
            R\ otateRight[t1, 32]]; \[IndentingNewLine]\t
\[IndentingNewLine]\)\)\)\)], "Input"]
FrontEndVersion->"4.0 for Microsoft Windows",
ScreenRectangle->{{0, 1024}, {0, 695}},
WindowSize->{495, 599},
WindowMargins->{{174, Automatic}, {Automatic, 17}}

Cached data follows.  If you edit this Notebook file directly, not using
Mathematica, you must remove the line containing CacheID at the top of 
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from within Mathematica.




Cell[1739, 51, 124, 2, 50, "Input"],
Cell[1866, 55, 81, 1, 29, "Output"]
}, Open  ]],
Cell[1962, 59, 52, 1, 50, "Input"],
Cell[2017, 62, 967, 18, 350, "Input"]

End of Mathematica Notebook file.

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