Method: Array#mode

Defined in:
lib/core/facets/array/mode.rb

#mode ⇒ Object

In Statistics. mode is the value that occurs most frequently in a given set of data. This method returns an array in case there is a tie.

[:a, :b, :c, :b, :d].mode  #=> [:b]
[:a, :b, :c, :b, :a].mode  #=> [:a, :b]

Returns an Array of most common elements.

Author:

  • Robert Klemme



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# File 'lib/core/facets/array/mode.rb', line 14

def mode
  max = 0
  c = Hash.new 0
  each {|x| cc = c[x] += 1; max = cc if cc > max}
  c.select {|k,v| v == max}.map {|k,v| k}
end