Wolfram Language & System 10.4 (2016)|Legacy Documentation

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gives a count of the number of times sub appears as a sublist of list.

gives the number of sublists in list that match the general sequence pattern patt.

Details and OptionsDetails and Options

  • In SequenceCount[list,patt], patt can be an expression with head List that includes pattern constructs such as PatternSequence, Repeated (..), Blank (_), and BlankSequence (__).
  • The pattern patt can also be a pattern that matches a list, though does not itself have head List.
  • With the default option setting OverlapsFalse, SequenceCount includes only sublists that do not overlap. With the setting OverlapsTrue, it includes sublists that overlap.
  • With Overlaps->All, multiple sublists that match the same pattern are all included. With Overlaps->True, only the first such matching sublist at a given position is included.

ExamplesExamplesopen allclose all

Basic Examples  (2)Basic Examples  (2)

Count the number of appearances of a sublist:

Click for copyable input

Count the number of appearances of a pattern sequence:

Click for copyable input
Introduced in 2015