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1.8.10 Grouping Together Elements of Lists

Functions for grouping together elements of lists.

  • Here is a list.
  • In[1]:= t = {a, b, c, d, e, f, g}


  • This groups the elements of the list in pairs, and in this case throws away the single element which is left at the end.
  • In[2]:= Partition[t, 2]


  • This groups elements in triples. There is no overlap between the triples.
  • In[3]:= Partition[t, 3]


  • This makes triples of elements, with each successive triple offset by just one element.
  • In[4]:= Partition[t, 3, 1]


  • This splits up the list into runs of identical elements.
  • In[5]:= Split[{a, a, b, b, b, a, a, a, b}]