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Mathematica Algebra Wolfram Language

Can I use Range for this lists

Camilo Pacheco

Posted 10 years ago

{1, -2, 3, -4, 5, -6, 7, -8, 9, -10} {1, -1, 1, -1, 1, -1, 1}

POSTED BY: Camilo Pacheco

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Udo Krause

Udo Krause, NOrganization

Posted 10 years ago

Another try In[47]:= o = 0; Range[10] /. x_Integer :> (-1)^Mod[o++, 2] x Out[47]= {1, -2, 3, -4, 5, -6, 7, -8, 9, -10} In[46]:= o = 0; ConstantArray[1, 7] /. x_Integer :> (-1)^Mod[o++, 2] x Out[46]= {1, -1, 1, -1, 1, -1, 1}

Another try

In[47]:= o = 0; Range[10] /. x_Integer :> (-1)^Mod[o++, 2] x
Out[47]= {1, -2, 3, -4, 5, -6, 7, -8, 9, -10}

In[46]:= o = 0; ConstantArray[1, 7] /. x_Integer :> (-1)^Mod[o++, 2] x
Out[46]= {1, -1, 1, -1, 1, -1, 1}

POSTED BY: Udo Krause