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1.8.9 Rearranging Lists


Functions for rearranging lists.

  • This sorts the elements of a list into a standard order. In simple cases like this, the order is alphabetical or numerical.
  • In[1]:= Sort[{b, a, c, a, b}]

    Out[1]=

  • This sorts the elements, removing any duplicates.
  • In[2]:= Union[{b, a, c, a, b}]

    Out[2]=

  • This reverses the list.
  • In[3]:= Reverse[{a, b, c, d}]

    Out[3]=

  • This rotates ("shifts") the elements in the list two places to the left.
  • In[4]:= RotateLeft[{a, b, c, d, e}, 2]

    Out[4]=

  • You can rotate to the right by giving a negative displacement, or by using RotateRight.
  • In[5]:= RotateLeft[{a, b, c, d, e}, -2]

    Out[5]=