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jrunning/rank_array.rb

Created July 30, 2014 17:46
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rank_array.rb
arr = [89, 52, 52, 36, 18, 18, 18, 7]
def rank_em(arr, accum=[], rank=0, run=0, last_head=nil)
head, *rest = arr
return accum if head.nil?
run += 1
unless head == last_head
rank += run
run = 0
end
rank_em(rest, accum.push(rank), rank, run, head)
end
p rank_em(arr)
# => [1, 2, 2, 4, 5, 5, 5, 5, 9]
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