ninety-nine/P02.clj at master · pavelfatin/ninety-nine · GitHub

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        ; P02 Find the last but one element of a list.
      
        ; Built-ins
      
        (defn f1 [l]
      
          (last (butlast l)))
      
        ; Using index
      
        (defn f2 [l]
      
          (nth (reverse l) 1))

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