pedrofurla/silly.hs

Created February 4, 2021 16:34

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Silly twitter challenge https://twitter.com/Al_Grigor/status/1357028887209902088

Raw

	foldr @[] (
	\elm -> \case
	(k, i):rest -> if (elm == k) then (k,i+1):rest else (elm, 1):(k, i):rest
	[] -> [(elm,1)]
	) [] "aaaabbbcca"

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