{-

Concatenates the lists in an input list, with element X interspersed.

Examples:

intersperse ',' ["tom","dick","harry"]

=> "tom,dick,harry"

intersperse '!' ["hi"]

=> "hi"

intersperse 0 [[1..5],[6..10]]

=> [1,2,3,4,5,0,6,7,8,9,10]

-}

intersperse :: a -- X

-> [[a]] -- input list (of lists)

-> [a]

intersperse = undefined

in haskel