Method: Array#minmax

Defined in:

array.c

#minmax ⇒ Array #minmax {|a, b| ... } ⇒ Array

Returns a 2-element array containing the minimum-valued and maximum-valued elements from self; does not modify self.

With no block given, the minimum and maximum values are determined using method #<=>:

[1, 0, 3, 2].minmax # => [0, 3]

With a block given, the block must return a numeric; the block is called self.size - 1 times to compare elements; returns the elements having the minimum and maximum values per the block:

['0', '', '000', '00'].minmax {|a, b| a.size <=> b.size }
# => ["", "000"]

Related: see Methods for Fetching.

Overloads:

• #minmax ⇒ Array

  Returns:

  • (Array)
• #minmax {|a, b| ... } ⇒ Array

  Yields:

  • (a, b)

  Returns:

  • (Array)

# File 'array.c', line 6260

static VALUE
rb_ary_minmax(VALUE ary)
{
    if (rb_block_given_p()) {
        return rb_call_super(0, NULL);
    }
    return rb_assoc_new(rb_ary_min(0, 0, ary), rb_ary_max(0, 0, ary));
}