Method: Array#median

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

#median(offset = 0) ⇒ Object

Determines the sorted middle element.

a = %w{a a b b c c c}
a.median     #=> "b"

When there are an even number of elements, the greater of the two middle elements is given.

a = %w{a a b b c c c d}
a.median     #=> "c"

An offset can be supplied to get an element relative to the middle.

a = %w{a a b b c c c d}
a.median(-1) #=> "b"

The the array is empty, nil is returned.

Returns:

  • (Object) —

    sorted middle element



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# File 'lib/core/facets/array/median.rb', line 23

def median(offset=0)
  return nil if self.size == 0

  tmp = self.sort
  mid = (tmp.size / 2).to_i + offset

  tmp[mid]
end