TheAlgorithms-Ruby/quicksort.rb
2017-10-01 10:20:29 -04:00

15 lines
425 B
Ruby

def quicksort
return [] if empty?
# chose a random pivot value
pivot = delete_at(rand(size))
# partition array into 2 arrays and comparing them to each other and eventually returning
# array with the pivot value sorted
left, right = partition(&pivot.method(:>))
# recursively calling the quicksort method on itself
return *left.quicksort, pivot, *right.quicksort
end
arr = [34, 2, 1, 5, 3]
p arr.quicksort